update openseadragon to 2.4.2

openseadragon/changelog.txt

@@ -1,6 +1,61 @@
 OPENSEADRAGON CHANGELOG
 =======================
 
+2.4.2:
+
+* Add support for IIIF Image API 3.0 beta (#1764)
+* You can now crop an image with arbitrary polygons (#1772)
+* Improved support for using the Reference Strip in an OpenSeadragon Viewer inside a Web Component (#1676)
+* Added setWidth and setHeight methods to Navigator (#1686)
+* Improvements to docs (#1696, #1698, #1716, #1719)
+* Now passing Viewer AJAX configs down to ReferenceStrip thumbnails (#1701)
+* The ReferenceStrip now honors the useCanvas option from the Viewer (#1742)
+* Fixed: Navigator was still resizing after you explicitly set its width and height with navigatorWidth and navigatorHeight (#1686)
+* Fixed issues with touches on iOS 13 and iPad (#1754, #1756)
+* No longer throwing an exception on pages that have malformed URL parameters (#1758)
+* Fixed an issue with flipping the viewport on high pixel density screens (#1779)
+* Removed use of deprecated imageSmoothingEnabled prefixes (#1740)
+
+2.4.1:
+
+* You can now turn off the default canvas image smoothing, if you want sharp pixels when zoomed in past 100% (#1507, #1593, #1595, #1647, #1648)
+* Fixed problem with navigator highlight rectangle when returning from full screen with a custom navigator location (#1515)
+* Added option to set rotation increment for nav buttons and keyboard (#1524)
+* Fixed issue with flipping and opacity with multi-image (#1549)
+* Removed vestigial button group label element that was causing issues for accessibility tools (#1560)
+* Fixed a bug causing Viewer.areControlsEnabled to throw an exception (#1562)
+* Added tileFormat option to IIIFTileSource so you can specify the tile format (#1625)
+* Now using canonical URIs more consistently in IIIF to make caching and processing time easier on the server side (#1625)
+* Added support for IIIF's new preferredFormats property (#1656)
+
+2.4.0:
+
+* BREAKING CHANGE: Viewer's canvas-double-click event is now fired before it initiates the zoom (#1288)
+* You can now flip the viewport to get a mirror image of the original (#1441)
+* You can now prevent canvas-double-click events from zooming on a per-event basis (#1288)
+* Fixed: Opacity 0 images were causing unnecessary redraws (#1319)
+* The "page" event is now fired after the page index has been updated (#1330)
+* Added option pixelsPerArrowPress that sets the speed of arrow keys (#1364)
+* Improved IIIF options.maxLevel calculation (#1401)
+* Added canvas-key events, along with the ability to cancel key actions (#1414)
+* Added optional zoom in the middle of the image instead of pointer position (#1423)
+* Now supporting square edge tiles that are padded rather than cropped (#1426)
+* Fixed an issue causing the simple image tileSource to sometimes show duplicate copies (#1370)
+* Fixed an issue causing seams to appear in semi-transparent PNG tiled images (#1470)
+* Added visual customization options for the navigator (#1480)
+* You can now prevent canvas-drag events on the navigator (#1484)
+* You can now prevent canvas-click events on the navigator (#1416)
+* The navigator can now be restricted to just horizontal or just vertical panning (#1416)
+* Fixed DziTileSource so it doesn't load levels above maxLevel or below minLevel, if set (#1492)
+
+2.3.1:
+
+* Debug mode now uses different colors for different tiled images (customizable via debugGridColor) (#1271)
+* Fixed a problem with preventDefaultAction for the canvas-drag event (#1278)
+* Fixed an issue causing double images with certain aspect ratios (#1280)
+* Fixed: placeholderFillStyle had no effect (#1286)
+* Fixed seams that appear in wrap mode on Safari and Firefox (#1305)
+
 2.3.0:
 
 * BREAKING CHANGE: Tile.distance has been removed (#1027)