Bug Fix + Changes

- Projectile: animated projectiles
- Buff: iniWithName method added
- Enemy: Implemented regeneration
- Enemy: Introduced health bar
- Enemy: Fixed a bug about enemy speed change when they receive a
modSpeed buff. Now they won't change destination anymore.
Improved drop items

- items can now be more custom (via options file)
- improved buff management for temporary stats changes
- introduced randomFrom( array ) function in Utils, with tests