xulrunner 28.0 (devel 29.0b1)
slimerjs: update max gecko version to 28.0*

Closes #27674.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
crash 1.3.0-beta15 (devel)

Closes #27675.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>