Version 3

A sort of revival for the project.

New Features

Completely redesigned the UI, now uses bootstrap.
You can now pan and zoom, using the middle mouse button and mouse wheel respectively.
The underlay image can now be positioned.

Exporting

Now supports SoulEngine 2018 Polygons.
Can now export polygons as an array rather than a list.

Fixes

Setting an underlay image will now display it instantly rather than after clicking.
Improved undo shortcut (ctrl+Z) detection.

Documentation

Added comments to the code.