1.3.0

Fix missing controls in editor, and some effects and enhancements

Thanks to @rootkea, @T6Zksor for contributing

Campaigns

• Add test mission for Cyberdogs guns #268

Game

• Add animated loading screens #325 #199
• Add animated doors #167
• Add footprints, material-based footstep sounds, damaging floors #35

Editor

• Fix missing mission property controls in editor
• Fix macOS not being able to open campaigns via open file dialog #730