use the dedicated xycenter property
avoid setting the previous end-interpolation values before starting the new one, to avoid a jump if the player advances too quickly (also shortens the code)
add subpixel True, even though it doesn't seem very effective
prepare improvement in next renpy version
* Improved skipping performance by delaying the call to render functions until after skipping ends
* Fixed skipping not refreshing the doll image
* Fixed skipping callback handler being affected by rollback
* Refactored doll show method
* Fixed character cheeks and tears layers being stuck in both gameplay and character studio
* Fixed missing reset properties during end event labels
* Improved updater hint for potential edge cases
* Converted Luna personal favours into the new system, and cleaned up the code.
* Added 'noncompliant' return result to differentiate between unmet event requirements and the disabled states
* Added disabled state default parameter
* Fixed regression in sprites positioning method
* Fixed missing paperwork unlock when using quick start
* Removed redundant align attribute from doll class
* 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
* Improved and posed "Give me a handy".
* Posed "Dance for me".
* Adjusted some of Hermione's nickname requirements to align with her attitude.
* Minor writing improvements.
* Fixed CGController incompatibility with Ren'py automatic image definition system causing issues with Cho handjob/blowjob CG scenes
* Converted introductory CGs into show statements
* Converted quidditch CGs into show statements
* Converted potions CGs into show statements
* Reviewed and removed redundant CG code
* Fixed miss-named Cho "crooked_smile" expression.
* Fixed Tonks' "Morph" effect being delayed in some instances.
* Fixed some calls showing multiple ">".
* Removed bld and blktone in some places where it's replaced by inner thought and narrator character.
* Minor writing fixes.
* Minor character positioning fixes.
