Autorank

- Fixes 10, 14 regarding broken ordering in CD diagrams (thanks to gerald4, ZhongLIFR, vnmabus, AlexandreAbraham for their input and PavelKromer for the PR that led to the fix)
- Adds new feature for forcing to use parametric/non-parametric approach requested in 8

- Fixes 5: Replaced usage of deprecated median_absolute_deviation from scipi (thanks to d-diaz for fixing)
- Fixes 7: Fixes wrong ordering of p-vals of Shapiro-Wilk test in some corner cases (thanks to delsner for reporting)

This releases fixes a bug in the summary of bayesian analysis that was not correct, in case the results were all equal and/or inconclusive.

This release adds the ability to conduct bayesian analysis instead of frequentist analysis.

- Use bayesian analysis with autorank(data, approach='bayesian')
- Report generation for bayesian analysis
- New example for bayesian analysis

Some small fixes and improvements

- Minimal versions for matplotlib, scipy, statsmodels, and pandas defined
- Beautified string output of results
- Added a warning in case the matplotlib option text.usetex is True
- Fixed some typos

Feature complete and stable version of Autorank.

Future changes will be downward compatible.