FIx of +/- I in 20, 02

Fixes wrong +/- sign of the transform of Mueller matrix.

(Jupyter/iPython notebooks)

1.5

Fixed some code bugs in the filter and started to implement the permu…

Jupyter notebooks

1.3

fixed citation

Complementary Jupyter notebooks to "The Mueller matrix cone and its application to filtering"

1.2

fixed citation

Version as cited in Paper

1.1

fixed citation

Paper reference

This is the version cited.