v0.3.1b Beta - Ports from YASD, crash and bug fixes

This version includes several bugfixes:

• Fixed Github update system
• Fixed NTF on Github update window
• Fixed Statues zapping wands forever.
• Fixed a crash with Alchemy
• Fixed darts crashing the game out of your inventory

And some new content:

• Ported developer settings from YASD
• Ported map cache/performance improvements from YASD

v0.3.1a also fixes a crash with the unstable spellbook and a rare crash when descending
v0.3.1b fixes bombs not activating.

internal version number: 4