Security updates, etc.

• security/archive release v3.9 20241213
• fix bug in exec validity check in js9 helper 20241213
• add additional exec validity check to js9 helper 20241213
• restrict wrapper script names to use alphanumerics, underscore 20241213
• update emscripten to v3.1.72 20241123
• update emscripten to v3.1.59 20240519
• update socket.io to v4.7.5 20240519
• update npm module uuid to v1.2.8 20240519
• update npm module minimist to v9.0.1 20240519
• update emscripten to v3.1.40 20230531
• update socket.io to v4.6.2 to close security vulnerability 20230531
• update emscripten to v3.1.27 20221204
• update socket.io to v4.5.4 to close security vulnerability 20221203
• update npm modules uuid, minimist 20221203
• js9Electron.js: hack around breaking changes in v20 20221203

Public Release 3.8 (June 21, 2022)

• fix bug preventing flip, rotate, rot90 from working in Load() opts
• update emscripten to v3.1.13
• update socket.io to v4.5.1
• update astroem/cfitsio library to v4.1.0

Public Release 3.7 (May 16, 2022)

• add color change option to shape layers plugin
• ?renamedisplay=[old:]new will rename a display when loading the web page
• add experimental support for getting remote FITS URLs via CGI-based proxy
• add cgi proxy support to 'load remote ...' dialog box
• drag/drop url will try cgi proxy if proxy server is not available
• js9.js: private sockopts to JS9.socketioOpts to support user configuration
• js9Helper: helperOpts to socketioOpts, use Object.assign to merge obj prefs
• make cubecol's id more akin to a filename (i.e., without parens)
• remove gz:: and bz:: from saved virtual filename
• evcube: generated cube file cannot be a gzip'ed file (re: cfitsio)
• when saving a section, use the real section instead of recalculating it
• fix bug changing position of a selected region after pan/zoom/flip
• fix regions bug where stack order (send to back) was reset after pan/zoom
• fix bug changing position of a selected region after pan/zoom/flip
• fix bugs in handling text children of grouped regions
• fix bug when saving one slice of a cube, naxis was not always set to 2
• astroem: rearrange a few source files
• add Quit() public access routine (Desktop app only)
• es6: use for( key of Object.keys(opts) ){ ... where possible
• es6: change a few functions to arrow functions
• update astroem/post.js to es6 to match emscripten v3.1.x
• update emscripten to v3.1.10
• update socket.io to v4.5.0
• update fabric.js to v5.2.1

Patch Release 3.6.2 (January 3, 2022)

• add experimental support for converting event tables to 3D cubes
• add Counts in Each Cube Slice analysis task for files with NAXIS == 3
• optimize psList search for js9 helper
• add UI to change val/pos display color
• region editor: fix annulus edit (width, dashes not always processed)
• improve smoke tests
• update emscripten to v3.0.0
• update socket.io to v4.4.0
• update fabric.js to v4.6.0
• update open to v8.4.0

Patch Release 3.6.1 (August 16, 2021)

• fix various problems with placement of panner rectangle
• edit annuli: don't multiply by scale factor when generating circles
• update astroem/cfitsio library to v4.0.0

Public Release 3.6 (July 30, 2021)

• globalOpts.arrowIncrement: parameterize increment used by arrow keys
• selectShapes: if selecting a single shape, don't make a group selection
• add support for fabricOpts in js9prefs.js
• fix display of rotated non-square image in a non-square display
• fix bug that allowed arrow keys to move locked regions
• fix regression when adding/removing polygon points
• improve support for proxying js9 helper through a web server
• change the size of annulus region annuli graphically (meta-click to edit)
• change annulus defaults from 2 rings (0->15,15->30) to 1 ring (15->30)
• globalOpts.editRegions controls GUI region editing (def: true)
• fix magnifier jitter when moving a region with the arrow keys
• changeShapes: fix v3.4 regression that sometimes changed annuli incorrectly
• rearrange npm modules by uninstalling and installing socket.io
• clean up emscripten init in preparation for worker-based experiments
• update open to v8.2.1
• update fabric.js to v4.5.1
• update socket.io to v4.1.2
• update emscripten to v2.0.26

Public Release 3.5 (June 1, 2021)

• remove the long-deprecated fits2png code
• fix bug in js9helper sometimes preventing fits2fits size check
• add support for displaying the actual png/jpeg image ("overlay" param)
• add overlay parameter to preferences plugin
• add reset to image filter plugin (overlays can't reset via contrast/bias)
• optimize static colormap cell lookup using binary search
• fix bug in JS9.eventToCharStr assigning 46 to delete instead of a dot
• js9prefs.js: add support for a config object to allow merging obj prefs
• update emscripten to v2.0.23

Public Release 3.4 (May 5, 2021)

• maintain selection when switching between images, panning/zooming images
• ensure infobox displays correctly formatted val string
• add support for bitpix == 64 FITS data
• reg2wcsstr should not perform size calculation, use "cdelt" instead
• changing a region now shows immediately in the magnifier
• push unchangeable regions to back of fabric stack
• add 'locked' as opposite alias to 'changeable' for locking regions
• add support for 'locked' in region editor
• add support for binning tables on alt columns
• make mouseTouchZoom global instead of tied to a display
• turn off clickToFocus by default, way too many clicks (e.g. using menus)
• GetImage: don't throw if named image not available (return null instead)
• changing a region now shows immediately in the magnifier
• region editor now permits parent to change child's text
• changeShapes syncs child text color to main color (via regSyncTextColor)
• getShapes: now returns shapes in order in which they were loaded
• loadproxy: add support for ms-dos gzip files
• handle Infinity when getting scale min,max
• js9helper: change html error message to avoid 'Invalid character' error
• parameterize direction of mouse wheel zoom
• add skip factor to wheel zoom to avoid pileup
• globalOpts.mousetouchLimit limits zoom-out to size of image (def: true)
• don't display regions when GUI zooming an image with many (>500) regions
• don't display regions when GUI panning an image with many (>500) regions
• redesign region multi-selection dialog box to support groups
• add JS9.GroupRegions() and JS9.UngroupRegions() public routines
• add JS9.GroupShapes() and JS9.UngroupShapes() public routines
• add JS9.ListGroups() public routine
• add JS9.UnselectRegions() and JS9.UnselectShapes() public routines
• extend shape (region) selections to support boolean expressions (&&,||,!)
• add "onarrowkey" event for plugins, enable its use with pixel table plugin
• prefs: only save schema props (e.g. not all globalOpts when saving globals)
• fix regression in js9helper limiting size of file transfer
• remove support for fabric.js v1, it's ancient and incompatible with groups
• add deepscan.io checks when pushing to repository
• update eslint to 7.21.0 and make it happy
• update socket.io 3.1.2, then 4.0.1, remove 2.4.1 (now supported by v3+)
• update npm dependencies: uuid, rimraf, open, ps-node, table-parser
• update emscripten to v2.0.18

Patch Release 3.3.1 (December 15, 2020)

• fix old bug appending "//" to helperProtocol, even if present (breaks socket.io when saving prefs)
• add regMenuCreate property to prefs plugin, remove useless regConfigSize

Public Release 3.3 (December 14, 2020)

• listRegions: add format='regions' to parallel saveRegions output
• regions config: change color, width, pattern as colorpicker, menus change
• regions: fix regression when panning a grouped polygon or line
• js9Helper: fix regression in uploading FITS files
• fix bug to re-establish focus on js9 display after clipboard copy
• js9worker: worker socketio connection can now be restarted automatically
• update emscripten to v2.0.10
• add support for socket.io v3.0.3, while maintaining support for v2
• update fabric.js to v4.2.0

Public Release 3.2 (November 6, 2020, a day of hope)

• add js9 shell scripting and desktop hostfs smoke tests
• add checks on filename and id to guard against xss attack
• add js9msg script to send messages using wget or curl (node not required)
• js9 script will now use faster js9msg script, if appropriate
• make JS9's returned data consistent between js9Msg.js, js9Helper.js httpd
• allow --with-cfitsio (without a dir arg) if lib is in a system dir
• desktop: add dialog box for exported script
• desktop: in script, look for webpage in current dir, then in install dir
• desktop: pass resize info if specified width or height is <= 0
• desktop: save cmdline opts on close (use same width, height next time)
• fix problems passing very large FITS headers (> approx. 1Mb) to initwcs()
• fix regression in desktop when using default web page
• fix regression in mouseup cb: updateShapes mode is "update", not "mouseup"
• various changes to generate Linux desktop app as well as macOS app
• js9Electron.js: add support for js9Electron.json file
• add support for editing cmd line opts in preferences plugin
• refactor desktop app to support editing cmd line opts
• modify js/FileSaver.js so that Jupyter notebooks put saveAs() on window
• update FileSaver.js to 2.0.4
• update emscripten to 2.0.5

Public Release 3.1 (September 8, 2020)

• regions menu: list, remove act on selected or all regions
• edit menu: edit, copy act on selected or all regions
• add GUI inputs to configure style (color, strokewidth, stroke pattern)
• add selection criteria input to multi-selection dialog
• add SelectShapes() and SelectRegions() public routines
• console plugin can now execute public routines
• add ability to turn off auto-create of regions from the Regions menu
• 'a' key creates a region using the last one selected from Regions menu
• set globalOpts.regionsToClipboard to false (breaks copy selected support)
• display (screen) coords can be specified prefixing 'd' to x, y
• display coords can be preserved by specifying preservedcoords property
• view menu option to show display coords in val/pos string in image sys
• add JS9.DisplayNextImage() public access routine
• add 'sticky' property to regions (no change on pan, zoom, rotate, flip)
• refactor dataminmax, mkColorData to avoid Chrome multi-sec delays in for loops
• add support for rotating to North Is Up in current wcssys in SetRotate("northisup")
• add north is up rotation to Zoom menu and zoomcontrols dialog
• rotate/flip panner image as displayed image rotates/flips
• N/E marker now tracks current wcssys, not file's wcssys
• JS9.SetFlip(), JS9.SetRot90() use transform instead of changing image data
• add JS9.SetRotation(), JS9.GetRotation() to rotate image by arbitrary angle
• add JS9.ChangeRegionTags() public routine to add/remove region tags
• reorganize github site (new build directory, src in src, demos in demos)
• make install does not load demos, use make install-demos explicitly
• remove deprecated fitsy code from top level
• add JS9.ListRegions(), JS9.EditRegions() public routines
• regions menu: options to save regions using different wcs, also save csv
• separate: add ability to use a CSS Grid instead of light windows
• sync: add GUI for plugin and change menu GUI to match
• desktop: add searchbar to analysis light windows (ctl-f or cmd-f)
• inline voyager images (remove dax versions from js9inline.js)
• JS9Titlebar plugin adds image id to title (uses globalOpts.updateTitlebar)
• add onregionsmove callback to Magnifier plugin (if intensivePlugins)
• add CopyShapes() to copy shape layers to another image (cf CopyRegions)
• add CopyParams() routine to copy params from one image to another
• add ColorControls plugin to color menu
• rgb mode is now associated with each display separately (not global)
• move rgb info when moving images between displays
• resort preloaded files into their original order
• update node minimist package to avoid prototype pollution bug
• don't use centered scaling for line and box regions
• add length/angle options to line configuration dialog box
• add statusbar plugin
• globalOpts.menuPosition to set menu position (def: below the menu button)
• add sum/avg option to binning plugin
• add support for fractional binning
• add GetOpacity(), SetOpacity()
• add support for opacity floor: an opacity assigned if pixval <= floorval
• extend opacity in menu to include floor opacity support
• sync images: sync all images to facilitate blinking
• sync images: add syncwcs option to force sync using image coords
• desktop: options can now be passed via --switches (e.g., --scale log)
• Load: add ra,dec, px,py, wcs properties to support panning
• Load: regions property can load a region file or add a region
• syncImages: add rot90, flip, and sync blended images
• CloseDisplay now takes an optional regexp of images to close
• add source, destination in/out/over/atop methods to blend plugin
• static colormaps: specify color/opacity and pixel range
• expand MaskImage to support "overlay" as well as "mask" of image data
• add MaskImage() routine to allow one image to mask another
• remove experimental LoadAuxFile() (too fragile, subsumed elsewhere)
• fix region parser to check for exclude regions
• fix bug when sortable GUI changed the image stack with multiple displays
• fix annulus radii text box in regions config
• update uuid and rimraf modules for js9Helper
• update jquery to v3.5.0
• update emscripten to v1.40.1
• update fabric.js to v3.6.3 and enable strokeUniform
• update cfitsio to v3.48 (via astroem repository)
• update ResizeSensor to v1.2.2

Public Release 3.0 (January 6, 2020)

• improve menu placement for Jupyter support
• replace image filter menu with plugin that supports parameter adjustments
• just redisplay already-loaded slices
• added PanZoom controls to Zoom menu, containing "pan to" support
• wcs menu: don't show wcs options if image has no wcs
• add Google's new turbo colormap
• add analysis plot configuration dialog box to set data range and scale
• improve panner to show display area (not image area)
• infobox: fix bug displaying image coords instead of phys if sys was image
• webworker init: avoid CORS problems when webworker is on a remote location
• add array-based x,y flip and +/- 90 degree rotation to the Zoom menu
• add JS9.SetRot90() and JS9.SetFlip() public access routines
• improve LTM/LTV support, various bug fixes
• avoid weakness in wcslib causing the wrong header length to be used
• fix error handling when called from external message
• update emscripten to v1.39.3 (required several changes to montage)
• upgrade code to use ES6

Public Release 2.5 (August 30, 2019)

• re-displaying an image now calls the onload callback
• JS9.BlendDisplay('reset') unsets blended images
• JS9.DisplayExtension('all') loads all image extensions
• JS9.ReprojectData('all') uses the current image to reproject others
• JS9.Load('foo.fits', {allext: true}) loads foo.fits, then all extensions
• add 'Display all images' button to Extensions plugin
• add support for loading all images in a multi-extension FITS file at once
• fix typo that made incorrect sections of non-rectangular images at zoom < 1
• fix bug when zooming image with a selected region
• fix bug when loading multiple annuli at once
• fix regression in DisplaySection: new ext was not added to FITS filename

Public Release 2.4 (July 15, 2019)

• fix double tap to close capability on iPhones
• fix internal regcnts tasks using annuli on iOS devices and re-enable them
• wcs grid: fix high limit display coordinates
• analysis menu: only display 3d analysis menu options for 3d images
• refactor LoadWindow so load waits for the lightwin to be fully created
• desktop app: support merging analysis tasks and loading foreign web pages
• add JS9.GetAnalysis() to return analysis task definitions
• add missing routine in internal CountsInRegions() and RadialProfile()
• add support for "All" selection of regions to include text children
• GetRegions: return text child region id
• desktop app: enabling node mounts local file system for direct FITS access
• desktop app: add security checks
• fix overly-aggressive .gitignore and add missing files
• fix typo that broke createMosaic("all")
• fix bugs in imexam plugins using a rotated line to define the image section
• fix spinner when using open local file dialog
• update emscripten to v1.38.37
• update contextMenu to v2.8.0

Public Release 2.3 (May 1, 2019)

• support for Mac app, a bit of Windows app: see github/ericmandel/js9app
• Electron desktop app: use internal colorpicker if Electron version >= 5
• add logo support
• add AlignPanZoom() public routine
• add --cmds [cmds] and --cmdfile [file] switches to js9Electron.js
• add --node switch to js9Electron.js, allowing nodeIntegration
• add JS9.globalOpts.onpreload property
• fix wcs alignment of blended images during pan and zoom operations
• fix mosaic code, which needed area mosaic file after all
• redesign Menubar to use more submenus, especially File menu
• fix bug in the supermenu sometimes not displaying the File sub-menus
• work around invalidation of emscripten heap pointers when memory increases
• add ability to change child text options via the parent shape
• add ability to push selected region to bottom of overlapping stack ('d')
• add ability to select all regions ('S' and Regions menu option)
• add SaveDir public routine (desktop app only) to set the save directory
• SavePNG,SaveJPEG: add option to save image RGB pixels instead of display
• SavePNG,SaveJPEG: add option to skip saving the layers (e.g. regions)
• shape layers (incl. regions) can now be exported in SVG format
• closing a light window that displays images now supports: close, move, ask
• add support for unconstrained panning
• dynamically select a JS9 display (supports one plugin for many displays)
• SaveColormap: allow multiple colormaps to be save at once
• add ability to change color, width, dash lines, tags of selected regions
• fix bug in "north is up" rotation: take CDELT values into account
• add direction vector to panner
• display regions in lightwin instead of on display or in infobox
• add region copyToClipboard capability (so 'p' always pastes last region)
• add ability to specify display opts in a FITS header (IMOPTS param)
• add ability to specify colormaps in a FITS header (IMCMAP param)
• add ability to create image cutouts of selected region(s)
• add ability to rename a JS9 display via JS9.RenameDisplay() api call
• ensure saved order of images after session load
• add --title and --renameid options to desktop app to rename display ids
• parameterize initial blending params
• Preload() loads .cmap files as colormaps
• colormaps: specify m colorwheel slices, from which n colormaps are assigned
• add ability to specify {display: id} param to external api calls
• add ability to unremove previously removed regions
• add ability to select regions based on the file from which they were loaded
• calling LoadRegions() twice removes previous regions loaded from the file
• add globalOpts.quietReturn to silence 'OK' messages
• Desktop (Electron.js) version: add --savedir option to skip save dialog
• JS9.Load(): globalOpts.reloadRefresh property to control reloading an image
• add 'revert' option to wcs reproject submenu
• wcs menu: each wcs system has own current units (based on initial defaults)
• fix region parser to see 'linear' as wcs, not a 'line' region
• cmaps: allow color choice via text input in fallback colorpicker
• fix memory leaks in reproject code
• LoadColormap: support file containing array of colormaps
• Infobox: for long filenames, click to see right hand side
• addColormaps now replaces a cmap with same name
• add 3D plot capabilities for data cubes in Analysis menu
• many improvements to user-defined menus
• turn on wasm in js9 Electron.js Desktop app
• menu: allow load/save of cmaps without a loaded image
• when blending, only sync zoom/pan reprojected images that are wcs aligned
• reproject: use float32 instead of float64 if datatype allows (less memory)
• reproject: correctly align images when wcs ref image is panned or zoomed
• reproject: fix memory leaks, always go back to original image
• js9 helper: increase ping timeout to avoid Chrome disconnects
• improve header generation and FITS card handling
• allow DisplaySection() to display the new section in a different display
• add colormaps plugin to create (complementary) colormaps
• fine-tune positioning: arrow keys display small crosshair cursor
• fine-tune positioning: arrow keys change magnifier display center
• regions menu: listonchange can act on "selected" (default) or "all" regions
• preferences plugin: image parameter for "all" or "selected" listonchange
• Meta (or Ctrl) now used for keyboard shortcuts displaying a light window
• edit, region menus: add option to display region configuration window
• add 'M-e' keyboard shortcut to display region configuration window
• add 'M-o' keyboard shortcut to open a local file
• add 'p' keyboard shortcut to paste regions at current mouse position
• (joining 'P' keyboard shortcut to paste regions at their own position)
• add 's' keyboard shortcut to select region that contains the mouse
• fix bug when saving/copying regions inside a rotated group
• Meta key during mouse move no longer updates internal image position
• update emscripten to v1.38.28
• update fabric.js to v2.7.0

Public Release 2.2 (October 9, 2018)

• add sync plugin: synchronize operations between two or more images
• add JS9.SyncImages() and JS9.UnsyncImages() public access routines
• SetParam(): setting a core param calls the core function
• add support for disabling colormap, pan, regions, scale, wcs, or zoom for a given image
• add Scale Clipping Limits plugin (with pixel distribution plot)
• add support for setting up a proxy from Apache to the Node.js helper
• add Separate/Gather Images plugin
• desktop app: add support for printing entire window
• desktop app: add support for saving entire window to a pdf file
• add support for loading all slices of a data cube separately into JS9
• add support for user-defined menus in the Menubar
• add support for averaging pixels when binning (def: summing)
• add support for Mac-style menubars
• add Edit menu to Menubar (copy/paste regions, positions, values)
• add JS9.DisplayCoordGrid() and associated client-side task to Analysis menu
• add JS9.CountsInRegions() and associated client-side task to Analysis menu
• add JS9.RadialProfile(), and associated client-side task to Analysis menu
• reproject will try to bin large images to avoid memory limits
• add support for wcs-based cross-hair tracking of images
• add support for displaying mosaic images
• add CreateMosaic() public routine
• remove .fz suffix in various places where it breaks things
• fix bug where binning an image was not updating the CD matrix
• update emscripten to v1.38.5
• update socket.io to v2.1.1

Public Release 2.1 (May 10, 2018)

• allow JS9.SetPan() to accept a single object with x and y properties
• allow JS9.WCSToPix() to accept a single object with ra and dec properties
• allow JS9.PixToWCS() to accept a single object with x and y properties
• add support for Toolbar plugin
• add JS9.SetParam() and JS9.GetParam() public routines
• add JS9.SetToolbar() and JS9.GetToolbar() public routines
• add JS9.SeparateDisplay() public routine to separate images in a display
• add JS9.GatherDisplay() public routine to gather images into a display
• add JS9.LoadColormap() public routine
• add JS9.LightWindow() public routine
• JS9.GetImageData() now returns display size, bin factor
• JS9.RunAnalysis() return types now include "regions" and "catalog"
• include comments and history in display of FITS header
• iOS 11.2.2,5 disable wasm: github.com/kripken/emscripten/issues/6042
• add refresh property to JS9.Load() to re-retrieve data
• add support for refreshing a file/url in JS9.RefreshImage()
• add support for displaying full image to JS9.DisplaySection()
• add 'f' (full) and 'r' (refresh) keyboard actions
• change 'r' (raise region layer) to '^' in keyboard actions
• add refresh and section commands to Console plugin (and js9 script)
• binning plugin: add button to load full image
• sessions: save/re-run dataLayer routines (e.g. reproject, rotate)
• sessions: save/restore blend mode
• sessions: save/restore wcsim from reprojection
• sessions: save/restore display parameters
• SaveSession saves either current image or all images
• ensure correct extension for Save{Session,PNG,JPEG}
• image blending: update GUI when changes are made via API
• image blending: support sizing of static div
• fix imexam routines needing integer section limits
• update emscripten to v1.37.28
• update fabric.js to v1.7.22
• update contextMenu to v2.6.3

Minor Patch Release 2.0.2 (December 15, 2017)

• add zscale, zmax to SetScale()
• improve display-based routines (separate, gather, resize, center, select)
• improve alignment of differently sized images
• allow zoom during image blending
• add menu support for closing all images
• add support for selecting a target display in a supermenu
• add support for dispersing images from one display into new displays
• add support for gathering images from multiple displays into one
• add support for new image inheriting params from current image
• fix allinone (dont use wasm)
• fix bug loading wasm file in LoadWindow('new')

Minor Patch Release 2.0.1 (September 29, 2017)

• move helper log file outside www directory
• improve fetchURL() error messages
• fix bug in load catalog menu option
• allow json opts in Load* family of routines
• fix bug in JS9.Preload by saving a copy of opts

Public Release 2.0 (September 27, 2017)

• add support for emscripten-based WebAssembly
• add support for HPX projection
• add wcs selection menu to regions config dialog
• aesthetic improvements to regions config dialog
• fix race condition in Electron startup if not codesigned
• fix binning when manually specifying parent file
• fix wcs system display in infobox
• fix bug in js9Helper.js where localhost was not upgrading to use ws
• update emscripten to v1.37.20
• update fabric.js to v1.7.19
• update socket.io to v2.0.3
• update jquery to v3.2.1
• update jquery-ui to v1.12.1

Public Release 1.12 (July 25, 2017)

• refactor astroem to use astroem repository of emscripten library byte-code
• add DisplaySection() public routine
• add ability to extract a section from images (as well as tables)
• add fits2fits configuration params for large files support
• add large file support in which large files can be handled externally
• allow infoBox to be configured via JS9.globalOpts.infoBox and preferences
• add wcs center and wcs fov display to infoBox
• add js9.app Mac desktops to run js9 script (drag/drop images onto it, etc.)
• add support for specifying URLs on js9 command line (uses proxy load)
• JS9.Preload() will now call JS9.ProxyLoad(), if required
• proxy load now turned on by default (needed for Desktop use)
• add support for drag/drop URLs onto JS9 display (uses proxy load)
• add support for uploading FITS files to a remove server
• add support for displaying bzip2 files
• add support for drag drop of region, catalogs, sessions (by file extension)
• add text, fonts, stroke options to region configuration dialog box
• add support for specifying a text region as a child of a region
• add js9-to-ds9 region conversion to js9 script (-r)
• add support for importing ds9 regions, including properties in comments
• sort overlapping regions so smallest is on top
• fix memory leaks in mef support
• add Divs plugin to show/hide in-page JS9 plugin divs
• allow shape size controls to match shape color at border, corner, or both
• use file extensions when opening local files (fits, regions, catalogs, etc)
• add keyboard action to move selected region in back of other shapes (not a default)
• JS9.RegisterPlugins() will instantiate plugins if scripts load asynchronously
• add JS9.InstantiatePlugins() public routine
• deprecate auto load of js9Prefs.son (load js9prefs.js explicitly instead)
• update emscripten to v1.37.9
• update socket.io to v1.7.3 (big change in module directory structure)

Public Release 1.11 (January 9, 2017)

• add support for displaying HEALPix files
• add initial support for memory management of internal FITS files
• add menu support for clearing FITS files from internal memory
• add support for running JS9 on the Desktop using Electron.js
• integrate Desktop Electron support into into js9 script
• add ability to load local catalogs and save catalogs to disk
• add JS9.LoadCatalog() and JS9.SaveCatalog() public routines
• add Shape Layer plugin to turn on/off layers and set the active layer
• remove list of shape layers from View menu in favor of Shape Layer plugin
• add JS9.ActiveShapeLayer() public routine
• improve onimagedisplay processing for mef, cube, imarith plugins
• fix bug in cube plugin blink support
• update fabric.js to v1.6.6
• update socket.io to v1.5.1
• update closure-compiler to v20160911

Public Release 1.10 (October 11, 2016)

• add support for full-display mode
• add support for keyboard actions and shortcuts
• add JS9.SetRGBMode(), JS9.GetRGBMode() public routines
• unclutter the position/value display
• dont update value/position if "special key" is pressed
• buttons and menu/titlebars are now beautiful and Mac-like
• buttons can be beautiful and flat (change via class specification)
• add support for copying regions to another image (JS9.CopyRegions())
• add initial support for plotly plotting library
• improvements to energyplot, evfilter, binning plugins
• add support for alternate WCS (including JS9.GetWCS, JS9.SetWCS routines)
• add JS9.LookupImage() public routine
• generalize and extend plugin callback capability
• extend range of FITS files that can be WCS-projected using Montage
• add support in the File menu for saving and loading sessions
• add JS9.LoadSession() and JS9.SaveSession() public routines
• update imexam,fitsy, archive plugins
• update fabric.js to v1.6.3
• update cfitsio to v3.39
• update socket.io to v1.4.5

Public Release 1.9 (June 8, 2016)

• add standard RGB image processing functions to the Analysis menu
• add support for gesture-based zoom (scroll wheel and pinch)
• add MouseTouch plugin to change mouse/touch actions
• image id now contains extension name or number for FITS extensions
• add support for histogram equalization scaling
• add support in js9 script for starting up a browser/web page
• add support for displaying slices of a FITS data cube
• add support for image arithmetic (between 2 images or image & constant)
• add support moving images between JS9 displays
• add support for displaying HDUs in multi-extension FITS files
• add 'magma', 'inferno', 'plasma', 'viridis' colormaps from matplotlib
• deprecate the use of funtools when building JS9; please use cfitsio

Public Release 1.8 (March 21, 2016)

• add image blending plugin to support blending operations between images
• add ability to blend images using W3C composite/blending modes
• add colorbar plugin to display colormap vs intensity information
• add blink plugin to blink images
• add line region (with support for multiple line segments)
• add raw data layers to allow manipulation of underlying raw data
• add JS9.FilterRGBImage() to support RGB image processing routines
• add JS9.GaussBlurData public routine to perform Gaussian blur on data layer
• add JS9.RawDataLayer() public routine for raw data layer manipulation
• add JS9.ShiftData() public routine to shift raw data in x and y
• add JS9.GetDisplayData(), returning data for all images in a given display
• add JS9.SaveJPEG() public routine to save image and overlays as JPEG
• add JS9.AddColormap() public routine to add a colormap to JS9
• add JS9.SaveColormap(), JS9.OpenColormapMenu() public routines
• JS9.SavePNG() public routine now saves image and graphical overlays
• add support for reprojecting images using Montage/mProjectPP
• add JS9.Reproject() public access routine
• change menu option Color->alpha (0 to 255) to Color->opacity (0.0 to 1.0)
• fix bug when interactively changing panner for non-square images
• fix bug in lut colormap, which truncated the first color
• refactor emscripten astroem package into sub-packages
• update emscripten to v1.35.0

Public Release 1.7 (January 12, 2016)

• add Jupyter/IPython support for iframes
• add keyboard focus support for Jupyter/IPython
• add timeouts to avoid back-end connect() hangs
• add support for using rgb file as the display over a data file
• default helper is "none" (for Jupyter, where js9Prefs.json is not loaded)
• add lower right handle to change width and height of display
• add View menu option to change width and height of display
• add JS9.ResizeDisplay() to change the size of a JS9 display element
• add JS9.DisplayPlugin() public routine for custom menus
• add JS9.GetFITSHeader() (as a string) public routine for custom menus
• add resize handle to display (lower right corner)
• add View menu option to change the display width and height
• add support for handling group events in shape layers (i.e. catalogs)
• add support for handling mouse events in shape layers (i.e. catalogs)
• add support for tooltips to shape layers (i.e. catalogs)
• add return values to saveFITS() and savePNG()
• add spinner while waiting
• fix OpenFileMenu() and OpenRegionMenu() when using multiple displays
• fix text region printing
• fix bug in panner box when panner image does not fill panner width
• fix region configure to "delete" only itself (not all regions)
• fix one pixel bug in WCS region conversion
• update fabric.js to v1.5.0
• update socket.io to v1.3.7
• updated jquery to v1.11.3

Public Release 1.6 (November 7, 2015)

• add support for extracting image/table sections from "parent" files
• add JS9.LoadProxy() public routine to load FITS URLs via proxy server
• add support for loading Dropbox (and other CORS enabled) shared links
• add support for loading links by proxy through the back-end server
• add SetValPos and DisplayMessage public routines
• add options to create new JS9 windows from the file menu
• add experimental support for JS9 in an iframe, using postMessage
• remove starting "_" from SUPERMENU id (not legal syntax)
• fix various iOS foibles (scrolling, double-click to close)
• fix memory leak in cfitsio RefreshImage() support
• fix bug in lut colormap limit check
• fix bug in JS9.RefreshImage() blob handler
• fix overflow bug in cfitsio bscale/bzero support
• fix bug in zscale by properly exposing emscripten methods
• update emscripten to 1.34.1
• update wcs library to 3.9.0

Public Release 1.5 (July 9, 2015)

• add support for specifying regions using Funtools/DS9 syntax
• add support for loading Funtools/DS9 region files
• add support for running the Node.js helper using https protocol

Public Release 1.4 (May 3, 2015)

• add Preferences plugin to set image and region user prefs
• add ability to save image to FITS and PNG files (limited Safari support)
• add ability to save regions to a text file
• fix bugs in Binning plugin (mainly for cfitsio, but some general bug fixes)

Public Release 1.3 (March 30, 2015)

• add cfitsio library support to JS9 (emscripten compile to javascript)
• add data-width and data-height attributes to change the size of JS9 divs
• extend tpos and js9helper to use cfitsio (or funtools)
• update tpos js9Protocol to 1.1 to include header comments in the header
• default WCS is now determined in the browser, not by the back-end server
• ensure that section info is maintained during JS9.RefreshImage()
• prevent preload from happening more than once
• fix broken File->Open menu option
• update emscripten to v1.27, add new optimizations to astroem

Public Release 1.2 (January 4, 2015)

• concurrent release of pyjs9 1.0 on github
• update socket.io to the Engine.IO-driven v1.x (specifically v1.2.1)
• add ability to reconnect to node.js server automatically if latter restarts
• add support for specifying a temp work dir for back-end analysis
• add http support to js9Helper.js so messages can be sent via GET, POST
• JS9.Load: accepts FITS files as blobs and base64-encoded strings
• JS9.RefreshImage: accepts blobs (FITS files), js arrays and typed arrays
• JS9.GetImageData(): returned data can be array or base64-encoded string
• fix bug in arguments to public api routines sent via external message
• fix bug in File List: clicking on same file multiple times now redisplays

Public Release 1.1 (November 15, 2014)

• NB: api change: added errcode to argument list of RunAnalysis() callback
• new api: AddDivs() to add JS9 displays and/or plugins to the web page
• new api: Send() sends msgs programmatically (useful for 3rd party helpers)
• add support for super-menus that can control multiple JS9 displays
• add support for onload callback when displaying FITS files
• allow xcen, ycen (in image coords), zoom to be passed in obj to JS9.Load()
• re-factor js9Helper.js: each analysis task is its own top-level msg
• allow user-defined msgs to be added to analysis tasks more easily
• ensure correct region size during RefreshImage() and table binning
• add contour plugin to default plugins in js9plugins.js
• add checks for NaN values to imexam plugins
• fix imexam plugins bug when regions are rotated and resized
• fix bug in encircled energy preventing calculation for non-integer radii
• properly handle FITS TFORM cards without a repeat value (XMM data)
• resize regions properly when tables are binned by a block factor
• ensure that datamin and datmamax are updated when a binary table is binned
• dont send image notify events to back-end during contrast/bias changes

Public Release 1.0 (September 30, 2014)

• NB: change to the Public API: id is no longer first argument. See API doc.
• infobox plugin upgraded to a tabular display
• node.js server sends unique pageid back to JS9
• JS9 menus now cover light windows (higher zindex)
• improved accuracy of polygon points for contours
• moving a polygon point now calls listRegion
• added missing commas in WCS display of polygon points
• corrected WCS for drag/drop of sections of FITS binary tables
• fixed incorrect region size when binning FITS binary tables
• fixed memory leak in astroem reg2wcs routine
• plugin divs can now set height and width using CSS
• added defensive code to remove bash functions from CGI and node calls
• updated fabric.js to 1.4.11

Release 1-epsilon (July 28, 2014)

• JS9.Load() can now load FITS files directly (rather than converting to PNG)
• added support for FITS binary tables, including binning and filtering
• added support for gzip'ed FITS files
• added support for "physical" coordinates (i.e., tied to original data file)
• changed 2D graphics subsystem from Kinetic.js to fabric.js
• added generalized shape layer support for regions, catalogs, contours, etc.
• region context menu is now a light-weight web page with many new features
• added text and point regions
• position of a pixel is now in the center of the pixel
• accelerator key changed from shift key to meta key (command on Mac, control elsewhere)
• reduced number of js9 files to load in a web page
• redesigned and flattened returned region object
• redesigned public API
• changed Public routines JS9.Pix2WCS and JS9.WCS2Pix to be 1-indexed
• added ability to group and move regions
• box rotation is now around the center of the region
• all image coordinate are now 1-indexed throughout
• fixed bug where adding a polygon pt didn't show until region was selected
• changed polygon points to an array of objects {x, y} instead of just x, y
• fixed various layout bugs in plugins
• updated emscripten to latest version
• updated flot to latest version
• updated jquery to 1.11.1

Beta Release 13 (April 6, 2014)

• added support for handling NaN values

Beta Release 12 (March 10, 2014)

• added support for browser-based analysis via plugins (JS9.RegisterPlugin)
• converted Menubar, Info, Panner, Magnifier to plugins
• initial version of imexam plugin available (in plugins directory)
• initial version of archive/catalog server plugin available
• added support for zscale (IRAF min/max algorithm for scaling)
• added support for user scale limits
• regions can now be moved off the image
• shift key disables mouse plugin callbacks
• zooming a small image will use all of the available display canvas
• added support for sub-pixel zooming
• added ability to process all keys in keypress callback
• added arrow key support for moving regions
• added fractional pixel positions for zoomed images
• fixed bug which reset pan when changing colormaps on a zoomed image
• added strict mode
• update emscripten to 1.8.2

Beta Release 11 (December 18, 2013)

• initial port to iPad
• removed notifyHelper message when mouse enters image window
• fixed tpos crash when converting really large images
• updated jquery.contextMenu.js

Beta Release 10 (December 9, 2013)

• added support for RGB composite display
• added support for reading in auxiliary files via auxFiles preference
• added support for overlaying FITS image masks
• added support so that drag and drop files can be found by local analysis
• added analOpts.dataPath to specify where to look for drag and drop files
• box regions need to rotate around upper left point to ensure consistency
• changed name of fitshelper to js9helper
• changed JS9.submitAnalysis() to JS9.SubmitAnalysis()
• changed analOpts.datadir to analOpts.dataDir
• removed wcs event processing from node and CGI helper (use browser wcs)
• js9helper not run as a server from js9Helper.js any more (scales better)
• added ability to turn off redraw when creating a large number of regions
• fixed bug in panner display for non-square images
• added work-around for Google Chrome v31 bug (regions not drawn)

Beta Release 9 (October 23, 2013)

• added support for client-based WCS using emscripten 1.5.6
• added drag and drop of FITS images (binary tables are coming)
• added support for region callbacks (executed when a region changes)
• added JS9.Regions() public routine to retrieve and modify selected regions
• added Close Image button to File menu
• reduced size of panner when created by View menu
• updated Kinetic.js to v4.7.2
• minor bug fixes (e.g., annuli strokeWidth not resizing properly)

Beta Release 8 (September 23, 2013)

• fixed security in node.js support by requiring use of wrapper scripts
• added support for CGI-based back-end helpers
• implemented automatic discovery of analysis definitions
• added timer-based management of WCS update requests
• updated socket.io to 0.9.16
• changed routine name from JS9.preloadImages() back to JS9.Preload()!

Beta Release 7 (August 19, 2013)

• fits2png: added support for "%cookie" in odir specification
• js9.js and js9Helper.js both now use js9Prefs.json for setting preferences
• fixed bug in display/manipulation of panner when image is zoomed
• added "none" as an analysis return type to support hidden analysis
• changed routine name JS9.Preload() to JS9.preloadImages()
• added clipping to region manipulation
• fixed region strokewidth problem when zooming image
• fixed magnifier and panner where multiple instances of js9 are present
• numerous changes to pass new JSLint rules
• updated jquery to 1.10.2
• updated jquery.flot to 0.8.2
• removed references to of jquery-ui in demo files (its not used)

Beta Release 6 (July 22, 2013)

• added support for panner window, including ability to zoom the panner
• added support for magnifier window, including ability to change magnification
• implemented zoom menu (zoomIn, zoomOut, zoom1, zoom2, zoom4, zoom8)
• added support for all FITS data types (silrd) in js9.js and tpos.c
• png file now contains FITS header in json format
• NB: the format of the PNG representation file has changed substantially!
• raw arrays now implemented as a typed array, using DataView to unpack it
• updated Kinetic.js to v4.5.4 (multiple changes required to code)

Beta Release 5 (May 20, 2013)

• added support for dynamic creation of js9 instances (new or light window)
• added support for pre-loading images into a js9 on page load
• added support for running analysis web page buttons, forms, etc.
• added support for printing the image
• added new demo pages
• changed js9msg script name to js9
• loading javascript files is "generic" (no version numbers in filenames)
• updated Kinetic.js to v4.5.1

Beta Release 4 (April 26, 2013)

• added support for polygon regions
• added support for fixing (i.e. freezing) regions in place
• added support for container regions (constrain position of other regions)
• added support for shift key accelerator
• fixed multiple bugs in region listOnChange support
• updated Kinetic.js to v4.4.3

Beta Release 3 (April 2, 2013)

• updated Kinetic.js to v4.4.0 to fix new chrome v26.0.1410.43 (whoah!)

Beta Release 2 (April 1, 2013)

• added support for executing analysis from console window
• added support for messaging to js9 via Node-based js9Msg.js
• added ability to specify params to region creation
• added server mode and input from stdin to js9Msg.js

Beta Release 1 (February 27, 2013)

• initial beta release with support for displaying FITS images, scaling, colormaps, external analysis, regions, wcs