This update mostly just fixes various bugs and typos, but also comes with a good number of changes to the tutorial and a change to how power works. Now, rather than your factory fully stopping on low power, it just slows down, proportional to the lack of power squared.
Here's a full changelog:
Added death screen
Added a lot more particles to indicate various things
Added "open saves folder" button
Fix press state not saving
Added junk item, which you gain from picking up "useless" items, and which can be used for crafting various decor buildings (in the future) and the destroyer building at the moment
Fix garnishes not appearing on map/garnishes being over buildings
Added arrow which points at some UI things during tutorial
Fix blue chunk border when loading into save
Added tree spawning spell (earth + anima)
Change how player movement works (noticeable change should be negligible)
Added tooltips to stat labels
Have registers have a max value
Make numbers in editor a different color, for clarity of characters like 0->O, 5->S, etc
Updated tutorial
Change fireball cost from 25 -> 5
Fix typos and incorrect tagging
Added chest building for accepting items from belts into the player's inventory
There are also some things which got silently updated between 0.4.0 and 0.4.1, which are listed here:
Fixed press bugs
Fix enemies respawning
Fix shipper not accepting items
Fix enemy note UI not showing enemies
Fix windows mouse sensitivity
Changed drillbit module recipe