Add Weinberg convention example

fixed typeset according to change in v13

Add a way to forbid some unwanted patterns in Ibp

fix `Dispatch` change of behavior in Mathematica 10

Added several examples (the physics of which are described in ArXiv:1…

…303.1523).

Box operator added.

Fixed a regression (tensor.m) with terms on exponential.

Dta does not raise / lower indices.

simpF error message moved to Simp

Dta does not raise / lower indices.

simpF error message moved to Simp

Documentation update