Reindent.
Reindent.
Comments.
Don't automatically reset hero's movement after a sensor (fix #292).

The script can do hero:stop_movement() is this is needed.
Merge pull request #291 from Shin-NiL/master

GCW-Zero changes
Fix a typo in the documentation of surface:get_transparency_color().
Merge remote-tracking branch 'upstream/master'