* Added temporary expression assignment functionality
* Fixed get_face returning a live dict object instead of a dict copy
* Improved and simplified character speaker functions
* Removed obsolete face dicts
* Fixed character calls breaking when the supplied number of expressions was less than 4, from now on expressions must be supplied as keyword arguments (this is already internally enforced)
* Fixed pulse_hover animation resetting
* Fixed Hermione's hold book pose
* Fixed minor story inconsistencies and spelling
* Fixed Tonks' hair colour not resetting
* Blocked Hermione from being summoned during Tonks' investigation
* Blocked Snape from being summoned during the day (It's not like he'd help anyway)
* Updated tutorials to reflect these changes
