v0.66.29 - Birdhouse Upgrades

As you expand, your need for birdhouses increases, but its upgrade caps quite early. Thus, I have added two more upgrades so you need less of them and can use the build space for other things!



I also added some QoL updates.

Changelog:
- Birdhouses can now be upgraded to level 4

Quality of Life:
- Knowledge and Coins can now be transferred in stacks of up to 10.
(can be further amplified by the Big Hands trait)
(current limitation to improve in future: settlers don't take stack size into account when deciding what to carry next)
- Ctrl+Click should now be able to be used to take resources from storage boxes
- Whip can now be stored in the storage box

Fixes:
- Cranes no longer work if on fire
- Hide empty docks that only show experimental content on experimental branch to prevent confusion
- Fixed clones becoming regular settlers after saving
- Clone potions can no longer be used on a boat
- Clone potions now disappear after being used
- Fixed other islands' "Base" tab button showing wizard island tooltip

Experimental branch:
- Mouse house should deliver to itself now
- Clone potions no longer useable in cave