Pypetb

**Full Changelog**: https://github.com/jgherruzo/pyPETB/compare/v0.2.1...v0.2.2

**Full Changelog**: https://github.com/jgherruzo/pyPETB/compare/v0.2.0...v0.2.1

New feature: Capability Analysis class

What's Changed
* V0.2.0 code by jgherruzo in https://github.com/jgherruzo/pyPETB/pull/37


**Full Changelog**: https://github.com/jgherruzo/pyPETB/compare/v0.1.6...v0.2.0

improved Compatibility with python 3.8 and its packages

implemented compatibility to python 3.8 or higher

statistic tables are implemented as class to improve error management
some other minor improvements