Version 0.0.036: Smarter targeting for helpful abilities

This is an "under the hood" update where there was a lot of refactoring of the targeting system. There's only one change you will notice.

When Nahla uses her Healing Touch, she now knows when people don't need healing. They will not be valid targets.

Next up, a few minor fixes before I bite into another targeting update.

• Save/Load buttons are covered on itch.io's page, I'll have to move them down.
• I broke highlighting targets when there is only one. Gotta fix it.
• Clicking off the map causes weird behavior. Not game breaking but I gotta fix it.