Changelog v0.5

FEATURES:

- Only show placement preview if you actually can place

- License (MIT, basicly do whatever you want as long as license file is included)

BUGFIXES:

- Selection image for optionbar now scaled correctly

- Ballcircles not clearing when loading level

- Fixed fill preview

- Fixed outlines not updating when filling

- Fixed Optionbar beeing in weird location when switching to edit mode

- Fixed Preview of filling sometimes not showing up