Make terrain clearly display which side is solid
Merge branch 'topic/ghi/9' into dev

Fixes Github issue #9
Colorize player character yellow when dashing
While player character dashes, render shadow trail
Merge branch 'topic/ghi/8' into dev

Fixes Github issue #8
Remove fake line editor from input objects

This will disable level-editing capabilities (we'll put them back
later)
Merge branch 'topic/ghi/32' into dev

Fixes Github issue #32
Create room-surrounding terrain
Merge branch 'topic/ghi/24' into dev

Fixes Github issue #24
Removed flame
Increase room width by x2
Fix initial terrain generation to match level size
Merge branch 'topic/ghi/13' into dev

Fixes Github issue #13
Add can_dash flag to Guy

Guy can only fash if `can_dash` is set to true
Merge branch 'topic/ghi/23' into dev

Fixes Github issue #23
Add base powerup class
Add dash powerup class
Make Powerup inherit from GameObject, not Physical
Close path in Powerup render event
Add DashPowerup to level