Add a Spellbound category to NSString for game related utility functions.
Add new audio tracks.
Add Grobold bitmap font.
[Bug fix] Sometimes valid paths were thrown as not connected.
- Make letter dragging smoother by considering "touchDistance".
- Do not override boundingBox on LetterBlockSprite.
Add utility method on TiledMap -boundingBoxOfInteractiveObjectNamed:
Pick Elric (character)'s start position from TMX when the map is loaded.
[Bug fix] Clear character's connector path on touchEnd.

Lack of this caused the character to follow the same path all over again on the next touch.
- Fix event TouchedWhenCloseBy
- Also make the character face in the same direction as the object on touch.
Add isAnimating flag to character to prevent any interactions with it during animation.
Terminate the walk-along path with the end direction as a last point. That's where the character would eventually be facing.
Fix: Event LandsBridged should dispatch only once.
- Add a coins counter to GameplayButtonsLayer
- Make a basic coin system functional on word freeze.
- Add a method on WordList to get a random N letter word.
  (Temp: uses ORDER BY RANDOM() in SQLite which is very slow.)
- Remove method doesWordExist:inWordList:
[Temp] Fix LetterPile refillLettersInBag: algorithm.
Fix character selection screen YAML. (Had a bug in character selection.)
Update GameScene YAML.
- Update Tutorial map (iPad-Regular)
- Add magic bag graphics to tileset.