Merge pull request #67 from Wohlstand/master

Merge to Update 67
Merge pull request #68 from Wohlstand/master

Merge to Update 68
Merge pull request #69 from Wohlstand/master

Merge to Update 69
Merge pull request #70 from Wohlstand/master

Merge to Update 70
Merge pull request #71 from Wohlstand/master

Merge to Update 71
Add history for placed water
Merge pull request #52 from KevinW1998/master

Add history for placed water