Invectio

* Add version information to invectio reports

* Do not use setup.cfg, use setup.py
* :pushpin: Automatic update of dependency pytest from 5.0.0 to 5.0.1
* :pushpin: Automatic update of dependency pytest from 4.6.3 to 5.0.0

* Fix version handling
* Fix error during installation
* Fix requirements
* Fix CI failures in Coala checks
* Fix, now correct one
* Version 0.0.2
* Fix default value if environment variable is not present
* Add coala configuration
* Add Zuul configuration
* Introduce flag for ignoring errors during parsing sources
* Introduce env-based configuration for library to enable logging
* Fix installation when there is missing actual package
* Import of initial implementation