Clean up removed files manifest in updater
Remove redundant backup package-manifest file
Rework height computations
Rework (relative) positioning
Fix up height/pos assumptions
Add FrameList sorting routines
Multiline flexbox base commit (layout)
Add flex-wrap and align-content to CSS style parser
Update some tests.
Wrap items when overflow is hidden.
Adjust lightweight theme tab handling to improve contrast and intensify hover effect
Add flex-flow CSS property
Small fixup for ApplyRelativePositioning()
Version bump (25.1b1)
Merge branch 'multiline_flexbox-work'
Merge branch 'master' into Code_Cleanup
Merge branch 'Code_Cleanup'
Fix for oversized menu arrows on Win8.1/HiDPI
Remove mention of no-longer-present menu entry.
Bump Firefox Compatibility Mode version to 31.x