Release 1.2
Update Makefile & CONTRIBUTING.md (dylanaraps#2245 & dylanaraps#2246)
Add Aster logo (dylanaraps#2251 +α)
Add UrukOS (dylanaraps#2258)
Make it available through the baz plugin manager (dylanaraps#2260 +α)
Add Project Sasanqua (dylanaraps#2264)
Add Ubuntu Unity (dylanaraps#2255)
Fix output collision with the prompt (dylanaraps#2195, dylanaraps#2263)
Add Moevalent logo (own)