Update 1.3

A small post- jam update to add some QOL stuff and improve the level editor.

- Added icon to UI to show when a peg will be placed
- Pegs now update visually when attached to rope, to avoid it looking like the rope is being eaten in some cases.
- Added a hint to the level Stop
- Progress percentage now counts collected lemons
- Rope length and breath UI no longer overlap
- Added icons for altering tile state in the Level editor
- Improved editor visuals
- Added saving/loading levels from a string (while in editor [f2])