Here is version 0.8.2063 changelog:

IMPORTANT: the game has a new save system. If you load an old saved game you will start from the beginning of the level, but your spells and journal will be kept, so you can skip some puzzles. Anyway we made so many changes and improvements that it’s worth playing the game from scratch.

- Added boss to Chapter 2
- New spell
- More monsters in Chapter 2
- Maps can be found around the levels
- Added save points where you can save whenever you like
- Performance enhancements
- Resolved many glitches in player’s movements and collisions
- Minor changes to the topology of the levels
- Dozens of bug fixes and improvements

Chapter 3, with new puzzles, spells and monsters is coming with the final release on April, 3. Stay tuned!