0.3.0-RC1

This release is an RC release as it depends on Indigo 0.15.0-RC1.

This release brings the Roguelike Starterkit up to date with Indigo 0.15.0-RC1, and also ports all of it's shaders to Ultraviolet.

Additionally, all foreground text colour values have been converted from RGB to RGBA and you can now optionally render a hard 1 pixel drop shadow at no additional cost.