Add readme and license

Tweak controls

Make more tiles produce

Display store price

Change order of plant unlocks in store

Balancing tweaks

Fixes

Fixes

Disable replacing

Expand the board, UX adjustments

Add mouse controls

Don't allow locked buys, fixes

Add unlocks

Fix deactivation, enable resource delta

Enable deactivation

Add cost to store

Correct arrow validity checks

Redisplay inner reqs on removal

Refactor removal to erase arrows

Begin store