Pre-alpha 2

I'm putting out a new pre-alpha release today to highlight a couple new features, but most notably the first multi-tile monster!

Changelog:

• Introduced a 2x2 creature: Troll
  • They are slow to move and attack, have high damage and high health.
  • Any tile of them can be targeted and interacted with.
  • Their pathing is aware of their size.
  • They can melee attack into adjacent tiles even if they wouldn’t be able to move there.

• Improved doodad placement
  • more dense spawning without blocking pathing
• Began working Castle mode into the game
  • Alwards tower level 1 now has an iron-bound door that takes you outside and switches to castle mode
  • Castle mode has a separate 24x24 tileset
  • Added a castle doodad. Interacting with the castle switches back to dungeon mode and and takes you into the Alwards tower level.