* WIP portrait faces
* character expressions for dialogue in first 3 stages (wip)
* dialog: simplified face system, new faces, script revisions (wip)
* fix wrong face name in reimu script
* cirno angry face; elly beaten variant
* render_character_portrait(): fix garbage bg and filter-bleeding
* workaround for incorrect face blending on dialog fade
* render_character_portrait(): fix bogus debug labels
* Replace sprite offsets with the more powerful paddings
* new faces for youmu, wriggle, kurumi; dialogue updates
* fix release build
* Update portraits; add Iku faces and Elly shouting face
* Add Reimu sigh face and Marisa sweat_smile face
* Add Kurumi dissatisfied face
* update Hina
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