Detect likely accidental use of c-like && and ||.

Fixes https://github.com/jdf/Processing.py-Bugs/issues/109
Fix the background() method's color parsing.

Fixes https://github.com/jdf/Processing.py-Bugs/issues/108
Build 0375.
Turn off autoglobal.
Declare version constraints in mode.properties.
Merge in branch that turns off autoglobal.
Version number jump to cause a nice break with the turning off of autoglobal.
Build 0401.