Dms-tools2

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* Added option for single-color logoplots for `dms2_logoplot`

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* Makes sample names a category to preserve order in `plot.plotCodonMutTypes`.

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* Adds functionality that can convert the `*bc_info*` files generated by `dms2_bcsubamp` into a `CodonVariantTable`.

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* Added `mle` method to `findSigSel`.

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* Allow multiprocessing `fastqFromSRA`

* Updates to genotype-phenotype maps generated from `CodonVariantTable` func scores.

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* Allow bottleneck of `None` in `simulateSampleCounts`.

* added `CodonVariantTable.classifyVariants` method

* `dms2_batch_bcsubamp` handles `--bcinfo` argument