Deprecated a few event-based internal methods.
Added entity_spec, set_entity_spec, damage_entity, get_projectile_bounce, set_projectile_bounce, get_projectile_shooter and set_projectile_shooter.
Fixed boilerplate warning.
Added missing information in the bundled docs.
Merge pull request #207 from EntityReborn/ManualMerge

Added a slew of entity-based functions.