Lifesci

Added
- Helper for working with peptide datasets

This version includes numerous updates to the internal structure of the code,
adding initial sphinx documentation, and adding the package to PyPI.

This version includes renaming the package from `pybio-utils` to `pylifesci`.

Updated
- Remove deprecated function call from `mygene_utils`

Updated
- Version specifications for prereqs

Updated
- Updated download-srr-files to use `misc.shell_utils` and http rather than ftp

Fixed
- References to old gtf functions in `misc.bio`