Mieaa

Fix `setup.py` to interpret long description as rst instead of md
Fix documentation

* Migrated documentation to read the docs
* converted some of the markdown files to rst
* Updated documentation to reflect various changes
* `newline` option for miRBase converter
* `p-adjusted` column in examples
* New supported species
* Rename API class methods:
* `convert_mirbase_version` -> `convert_mirbase`
* `convert_mirna_to_precursor` -> `to_precursor`
* `convert_precursor_to_mirna` -> `to_mirna`
* `convert_mirna_type` -> `_convert_mirna_type`
* `start_analysis` -> `_start_analysis`
* `get_progress_response` -> `_get_progress_response`
* update docstrings to match numpy style for sphinx

Make compatible with python 3.5 and 3.6
* Remove fstrings (introduced in 3.6)
* No required=True keyword for .add_subparsers (introduced in 3.7)

Initial release.
Currently involves little-to-no error handling.