Drep

- Update parse_stb.py to "append" instead of open, which lets it handle way bigger numbers of genomes
- Report how many genomes are being compared in last step of multi-round primary clustering

- Add the "extra_weight_table" flag to allow uses to add custom extra scores to their genomes
- Do some automatic checking of genome input (List number of genomes, throw warning if same base name is used twice, throw warning if over 5000 genomes and no —multiround_primary_clustering)
- Make a section in the docs for troubleshooting checkM and reference it when checkM fails

- Remove some assert statements
- Really just a version bump to update bioconda requirements

- Refactoring the test suite and the d_cluster module
- Adding help to the -g option
- Bare-bones support for gzipped genomes (lots of dependencies dont handle them)
- Give a warning when it has errors loading the Mash table
- Completely refactor the test suite to use pytest
- Make plotting only give tracebacks when run in debug mode
- Remove most of the options (just `dereplicate` and `compare` remain)
- Add greedy clustering support! Both `multiround_primary_clustering` and `greedy_secondary_clustering`
- Add centrality support; also handle centrality with greedy_secondary_clustering (will be calculated with Mash)
- Add --run_tertiary_clustering. This feature runs a final dRep job within the original dRep folder,
and adjusts Cdb and Wdb accordingly (see `run_tertiary_clustering` in `d_evaluate.py`)

- Log information about GenomeInformation when loading it

- Numerous improvements to ScaffoldLevel_dRep.py, including ability to process in chunks
- Update parse_stb.py to handle zipped .fasta files