We just uploaded a new version (1.1.6) of the "Sandbox settings" update on the tester branch!
Please don't forget that this is a tester branch. Things are buggy here.
If you want to play with precious save files from earlier versions, it's adviced to make a back up first.
What has changed in this new version? New features:
New gene Sticky Tongue
New food source Termite Hills
Added new sandbox settings:
World Settings (allows you to toggle the spa