Patch update 0.1.1 has been released. This addresses a multitude of bugs (some game-breaking) found during testing, and adds a few QOL/debugging features. Most notably: the ability to delete a save/delete all saves from the load world screen, and a developer information panel that can be accessed by enabling "Developer Mode" in settings and pressing Tilde.

Keybind changes (until a key binding config area is added these notices will be necessary): The Tilde key no longer switches layers, it opens the developer information panel when accessible. Use the L key instead.

Full changelog:

+ Added developer mode information panel for some basic world and diagnostic information.
+ Added buttons for deleting saves on the load world screen
+ Added warning box when certain non-fatal errors occur
* Made the surface elevated layer translucent
* Changed collision system to use native functions built into the KinematicBody2D node (as opposed to a bunch of raycasts)
* Fixed bug: Any saves past index 0 will not load
* Fixed bug: Footstep sounds don't work on loaded worlds until z index is changed
* Fixed bug: Collisions don't work on loaded worlds until z index is changed
* Fixed bug: Music does not play on loaded worlds
* Fixed bug: Time of day does not reset between world loads
* Fixed bug: Movement is broken on loaded worlds
* Fixed bug: Player renders above leaves
* Fixed bug: Light occlusion from surface mountains are still visible underground
* Fixed bug: Player is allowed to switch z index while loading (may cause crash)
* Fixed bug: Some buttons don't have click sounds
* Fixed bug: Footstep sounds only play once when on grass and stone (speed calculation error)
* Fixed bug: Time of day doesn't update on loaded worlds (world configuration isn't saving)
* Fixed bug: Map information is still visible when no map is selected on the load screen (may cause crash)
* Fixed bug: Movement enable toggle inverts if level is loaded twice in a row
* Fixed bug: Collisions are completely broken due to use of raycasts