Changed the documentation of pressure and stress tensor to reflect what the code is actually doing.
More fixes to fixes, because I'm an idiot who can't copy-paste text properly
Stricter out of bounds checking
Changed the documentation of pressure and stress tensor to reflect what the code is actually doing.
Merge branch '3.1' of https://github.com/jdegraaf/espresso into 3.1
Merge branch '3.1'