Introduced a much better animation mechanism
Improved the animations, but it's still ugly
Added animations translation_from_current_location and rotation_from current angle
Migrated to SDL 2
Added element transmutation animations
Simultaneous transmutations are now simultaneously displayed
libview animations are now functors
- Changed the next input location
- Added a foreground
Added unlocked element side bar
Added next-input-creation and next-input-introduction animations