Store this-values and arguments in immutable locals in codegen.
Add Fira Sans and DejaVu Sans to the last-resort font families.
Remove LocalImageCacheHandle hack and associated unsafe code.
Remove unused source file while cleaning up font code.
Remove box from image cache task.
Merge pull request #2707 from glennw/image-cache-handle

Remove LocalImageCacheHandle hack and associated unsafe code.
Merge pull request #2708 from glennw/font-cleanup

Remove unused source file while cleaning up font code.
Cleanup the Travis IRC notifications on builds to only show changes in status and use notify
Add the design document about JS-managed DOM.
fixup! Add the design document about JS-managed DOM.
Merge pull request #2701 from Ms2ger/mut-codegen

Store this-values and arguments in immutable locals in codegen.
Merge pull request #2651 from saneyuki/design_doc

Add the design document about JS-managed DOM.

r=ms2ger
Merge pull request #2709 from larsbergstrom/travis_irc_cleanup

Cleanup the Travis IRC notifications on builds
Merge pull request #2703 from nical/last_resort_font

Add Fira Sans and DejaVu Sans to the last-resort font families.