*Major refactoring:*
* Rewriting source for full **python3** compatibility
* All dependencies now provided externally, **environment.yml* file added to pull in dependencies from [Bioconda](https://bioconda.github.io/)
* NextGenMap v0.5.2 -> v0.5.5. Takes care of flipped basequalities in supplementary alignments.
* Varscan2 v2.4.1 -> v2.4.4
* Samtools v1.9 -> v1.10
* [RNASeqReadSimulator](https://github.com/davidliwei/RNASeqReadSimulator) by [Wei Li](https://weililab.org) added as subtree
* Dockerfile moved and updated to run with [miniconda](https://hub.docker.com/r/continuumio/miniconda3)
* Travis-CI testset updated.