Character editor usability improvements:

• The animation rig details pane now rebinds bones automatically after changes are made to you sprites, which prevents you from ending up with a character that looks broken.

Bug fixes:

• Dragging hitboxes after editing their properties can result in incorrect hitbox selection.
• Hitbox changes sometimes cannot be reverted using ctrl+Z.
• Trying to use Up+B from the ground multiple times will fail until you jump and land (which resets a flag so that you can use the attack again.