Changes since last update:
#4879 Version 1.0.277
#4851 Added more preferences for the available hash parameters.
#4866 Removes mozResponseArrayBuffer
#4876 Prevent adding undefined array entries to CMap.map in mapRangeToArray (issue 4875)
#4835 Prevent font error when no preferred cmap table is found (workaround for issue 4800)
#4886 Adds color components decoding to the JPEG
#4891 Fixes typo in getAsync
#4889 Optimized loops in JPG conversion.
#4868 Added a base64 transparent gif image to links for IE
#4894 Optimize JPG.js receiveAndExtend for 1 bit case.
#4896 Deleted unused variables in jpgjs buildComponentData.
#4897 Optimization for FlateStream_getCode, making more pdfs parsable.
#4902 Prevent infinite loop when scanning for endstream (bug 1020226)
#4907 add object id to streams to prevent infinite loops.
#4892 Fixes masked JPEG image
#4867 Fixes murmurhash for old webkit.
#4895 Small optimizations 1
#4870 Enable browser cache when running test server
#4910 Handle cases where the fontName contains non-alphanumeric characters (issue 4909)
#4912 Fixes optional backdrop regression
#4917 Fixed base64 image in CSS
#4920 Zero the height and width of the PageView canvas before deleting.
#4922 Return ErrorFont in loadFont when the fontRef is undefined
#4915 Fix #4914
#4925 Protects PDFJS.disableXXX == true from change
#4864 Translate statcmp.py to JavaScript
#4928 Removes statcmp.py
#4929 Imports most recent l10n files
#4930 Re-add Attachment strings to the Swedish l10n
#4932 Cache pages at the start of drawing, not the end.
#4924 Fixes drawImage for thumbs
#4933 Fix mishandling of incomplete, inverted masks.
#4834 Limit the size of canvases to 5MP (iOS restriction)
#4937 Halve the size of the PageView cache.
#4936 Fix PageView cache re-insertions.
#4938 Added support for decrypting PDF 1.7/2.0 Algorithm 5 revision 5 and 6. (perf)
#4939 Fixes JPX COC support / JPX error reporting refactoring
#4942 Add larger zoom values to zoom dropdown box
#4941 Prevent rendering unnecessary pages when the HOME/END keys are pressed
#4952 Collect More Telemetry Data
#4955 Renames concatenateToArray to appendToArray
#4959 Zero the height and width of cached canvases before deleting them.
#4950 Faster JPEG transform
#4951 Added getOperatorList to api.js
#4946 Refactor fake worker loading (issue 3862)
#4962 Increases page cache size when needed
#4961 Disables broken rAF on iOS
#4966 Add ChunkedStream.ensureByte().
#4965 Splits shared/annotation.js into core/ and display/
#4969 Implements onerror for JpegStreams
#4970 Fixes AnnotationUtils in the extension build
#4968 Build up textChunk.str more efficiently.
#4972 Avoid allocating return object in EvaluatorPreprocessor_read().
#4971 Removes error catch from fetchUncompressed()
#4945 Let Parser_makeFilter return NullStream when an invalid stream is encountered (issue 3417)
#4973 Factor out repeated Ref key string generation code.
#4979 SVG Viewer Example demo
#4981 Misc SVG Viewer example fixes
#4987 Refactoring PDF find controller and implementing page content and query normalization
#4982 Use null instead of [] for ops with no args.
#4991 Refactoring text layer builder and converting text layer builder to a class
#4944 Don't blindly trust toUnicode when building toFontChar for non-standard fonts without a font file (issue 4934)
#4976 Restructured EvaluatorPreprocessor_read to be more natural.
#4980 Additional heuristics to recognize unknown glyphs for toUnicode (bug 1027533)
#4993 Group 'rectangle' operator into constructPath
#4999 [SVG] Optimization of save/restore usage, Addition of paint methods
#4997 Fixes CanvasPixelArray set polyfill (#4974)
#5001 Do not run cleanup while printing is ongoing.
#5004 Improving CanvasPixelArray polyfill for Android
#5000 [SVG] Optimization of constructPath & Adds unit lengths
#5017 [CIDFontType2] Map characters missing in toUnicode to the private use area (bug 1028735 and issue 4881)
#5014 A few small font optimizations
#5025 Improve how DecodeStream handles empty buffers.
#5050 In the reftest analyzer, make it possible to toggle "Circle differences" with the D key
#5033 Avoid creating intermediate strings in Util.makeCssRgb().
#5015 Zero the height and width of the WebGL canvases on cleanup
#5005 Faster chunkedStream_getByte()
#5021 Fixes mesh fill pattern with optional matrix
#5062 Adjust the tabindices in the viewer
#5037 Add |fillRgb| method to LabCS
#5012 Prevent CMapFactory.create from failing by passing the necessary parameters from PartialEvaluator_readToUnicode (issue 5010)
#5068 Adds ImageData set support for legacy safari
#5069 Revert commit fc73e2e (PR 5005) for breaking certain PDF files
#4995 Fix another seac regression (issue 4801)