This new version fixes a bunch of bugs, some that were critical and could prevent progress in the game, as well as small improvements like X being healed after a boss fight; 

V0.2 save files are compatible with this new version, however it is recommended to erase your save data if the events are out of order (Chilly Fox room being locked before fighting him)

List of known/fixed issues :

https://solrensun.itch.io/mmxii/devlog/484028/02-versions-and-known-issues