Hello, it's v0.3.1 update.
Features:
0. Readded achievements.
1. Readded world deleting.
2. Readded multithread asynchronous world generation.
3. New style of world button choosing.
4. Blocks can be set on water.
5. Added steam achievements.
Bug fixes:
0. Fixed bug of saving golem-miner and golem-crafter.
1. Fixed bug when big blocks removed not fully, so player cannot set new blocks nearby a bugged block.