Shadowed:
	- Fixed an error when PARTY_MEMBERS_CHANGED fired for players who were not a healer class
	- Fixed guidToUnit/guidToGroup being removed before parseHealEnd when sanity checking
	- Fixed index nil table error when a group is disbanded while zoning
	- Fixed GetCasterHealAmount() now returns nil if no healing is incoming
	- Fixed getRcord typo on line #1904
