Previous Moisture Balance

@azdavidr Long history, at first we didn’t allow saturation, then we tried implementing this:

http://www.irrisoft.net/news/Quantifying_Effective_Rain_in_Landscape_Irrigation_Water_Management_IA_%20Technical_%20Conference_2009_%20Steven_Moore.pdf

We had a lot of complaints about the saturation level going beyond 150%, so we decided something reasonable was not allowing to go beyond 20% over (120%). It seems to be safe compromise.

If there is a domain expert out there that has a better way to implement, I’m listening.

:cheers: