Made test task mirror default (requires build)
Added task: package to create a zip of the dist folder, to upload to
github after a new release.
Added cssmin task
Changed replace task to replace main css in dist task to @@maincss
variable
Fixed a typo in the cssmin banner
Require atleast grunt-contrib-compress 0.5.2
Updated README, improved some language
Fixed an error in the glyph dataset for critical power glyphs that are
ql10.2 and either in head or weapon.

closes #17
Merge branch 'bugfix/issue/17' into develop
Prepare version 1.3.1