Add readme and license
Tweak controls
Make more tiles produce
Display store price
Change order of plant unlocks in store
Balancing tweaks
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