Added doppelganger class (#218)
* Added
An abstract class that summons a pet using settings from an inheriting class.
* Added
* Added zero check for SummonSpellValue
Some pet summoning spells have value=0, which will force those pets to be level 1.
* Added Doppelganger.cs & GameSummoner.cs
* Added doppelganger properties
Added properties for realm & bounty point vlaues for doppelgangers
* Exempted doppelgangers from RP and BP caps
* Exempted doppelgangers from RP and BP caps
* Added support for PetSummonThreshold > 100%
Also:
Added PetResummonTime accessor.
Changed SummonThreshold to PetSummonThreshold to match other accessors.
Changed to override TakeDamage() to move a lot of check out of Health.set
Removed torch flag from code; it should be done in the DB anyway.
This still needs a little work for PetSummonThreshold > 100%, and likely an entire new GamePet variation is needed for NPC pets.
* Doppels retain their disguise until 50% health
This makes doppels a little more interesting by not having them change forms the moment they're attacked.
