Version 1.3.1

Code hygiene improvements:

• Better initialization & open file from argument
• Refactor code to remove repetitive argument passing (HWNDs & HDCs)
• Heighten security by making protected functions private

Version 1.3.0

• First version of project built with Dev-C++
• Adds water spaces, spirals stairs
• Diagonally-filled spaces, walls, doors
• Objects: Pit, pillar, trapdoor, statue, etc.
• Draw rough edges option (for caves/caverns)
• Hide grid lines option (for export to VTTs)
• Keeps back-compatibility with old maps