Clarified tests for baselining.
Added filtfilt the forward-backward filter

* Added unittests and docstrings.
Simplified testing for filtfilt and lfilter
Updated docstring for lfilter, fixed typo and mentioned filtfilt
Bumped version.
Added Preliminary r2 plots.
Added LDA + shrinkage, updated the examples
Changed averages to means
Settled for MIT license:

- Added LICENSE
- Updated setup.py
- Bumped version
Removed COPYING file with old GPL license.
Added method to plot csp patterns.
Cleanup
Polish.
merged with upstream