v3.1.0

• Added subPixelRoundingForTransparency Viewer option to address seams that can appear in semi-transparent images (#2075 @TanukiSharp)
• Added Viewer.isAnimating() (#2075 @TanukiSharp)
• Added isFullScreen method to Viewer (#2067 @JachiOnuoha)
• Added option to include POST data when loading files via Ajax (#2072 @Aiosa)
• Exposed TiledImage's private functions for better maintainability (#2134 @Aiosa)
• Tile cache keys are now generated by the tile source, so it's easier to override them as needed (#2138 @Aiosa)
• Pinch to zoom now zooms around the center of the pinch, rather than the center of the viewer (#2158 @cavenel)
• Added fallback and deprecation warning for Viewer.buttons (which got changed to buttonGroup in 3.0.0) (#2153 @devbyjonah)
• Fixed an issue where turning off panVertical or panHorizontal would not affect the panning keyboard combos (#2069 @JachiOnuoha)
• Cleaned up console.logs so that errors and warnings use console.error and console.warn as appropriate (#2073 @Abhishek-90)
• Improved documentation (#2067 @JachiOnuoha, #2112 @shyamkumaryadav, #2152 @joedf, #2155 @samwilson)
• Fixed: Setting useCanvas to false would break the viewer (#2116 @rvv-bouvet)
• Allow silencing multi-image warnings on viewport coordinate conversion functions (#2120 @claycoleman)
• Fixed: Swiping fast multiple times made contact points in MouseTracker out of sync for touch events (#2121 @ronnymikalsen)
• Made MouseTracker more robust in certain scenarios (#2134, #2147 @Aiosa)
• Fixed an issue where full page mode wouldn't grow properly if you resized the window (#2100 @TanukiSharp)
• Now if you pass an error handler into makeAjaxRequest, it doesn't report errors into the console (#2142 @Aiosa)
• Fixed error caused by attaching MouseTracker to the page's document element (#2145 @tdiprima)
• Fixed an issue that would sometimes cause problems with freeing up ImageTileSource memory (#2162 @pearcetm)