Storage upgrades - adding YAML config

[butterscotchstallion]

• Any kind of state that is persisted should be in the sqlite DB

  sqlite

• Players

  YAML config options

• Dungeon modifiers
• Class list
• Effects
• Unit names
• Class abilities and finishing moves
• Character dialogue
• Experience per level configuration
• Room/dungeon intros
• Items

[butterscotchstallion]

I think we're sticking with the SQLite setup, at least for now