Language:
- Fixed a crash bug with number parsing
- Fixed a crash bug with invalid expression
- Fixed a crash bug with invalid routine invoking
- Fixed a memory leak when reassigning an array element with string
Libraries:
- Added a `PLOT` function to put individual pixels
- Added an `ARC` function to draw arc or pie shapes
- Added an `ARCFILL` function to fill arc or pie shapes
Editor:
- Added immediate saving on new sprite, map assets created
- Changed plot mode of the pencil tool to linked