What's new:
- Preview mode runs sketches without installing them
- You must install the APDE Sketch Previewer once, but then you can run sketches without installation indefinitely
- Preview mode is available as another target, along with wallpapers, watch faces, and VR
- Support for the new Processing sound library
- Undo and redo are more accessible
- Ability to bypass screen overlay warning
- Lots of bug fixes
These changes are driven by GSoC '18.