Add pdfBugEnabled to the default preferences
Disable the developer hash parameters by default in PRODUCTION builds of PDF.js
Zero the height and width of the WebGL canvases on cleanup
Combine re element into constructPath
Merge pull request #4993 from pramodhkp/rectelmnt

Combine re element into constructPath
Merge pull request #4999 from pramodhkp/saverestore

[SVG] Optimization of save/restore usage, Addition of paint methods
Fixes CanvasPixelArray set polyfill for chrome < 21 (#4974)
Merge pull request #4997 from CodingFabian/issue-4974

Fixes CanvasPixelArray set polyfill (#4974)
Optimization of save/restore usage
Added paintSolidColorImageMask
Added paintJpegXObject
Do not run cleanup while printing is ongoing.
Merge pull request #5001 from CodingFabian/issue-4994

Do not run cleanup while printing is ongoing.
Improving CanvasPixelArray polyfill for Android
Faster chunkedStream_getByte()
Prevent CMapFactory.create from failing by passing the necessary parameters from PartialEvaluator_readToUnicode (issue 5010)
A few small optimizations for CIDFontType2 fonts

Cache a constant length and replace one usage of |in| with a comparison against undefined.
A few small optimizations of adjustMapping

Replace a couple of |in| checks with comparisons against undefined.
use getBytes() instead of looping over getByte()
Merge pull request #5004 from CodingFabian/issue-5002

Improving CanvasPixelArray polyfill for Android