v1.2.11 — July 16, 2013

Support for +[PFObject deleteAll:]
Upgrades to subclasses of PFObject:

Subclasses now support @property (readonly) PFRelation *.
Object properties can now be deleted by assigning nil to them.
Property syntax will correctly convert a literal null (NSNull in Objective-C) field to a nil property value.
(Bugfix) Subclasses of subclasses will not get a default dynamic implementation when the superclass had an explicit definition. This fixes issues seen by some customers with PFInstallation subclasses.