Snaketools

===================

* stopped using pinned versions.

===================

* change pyup check to monthly
* update reqs from PYUP
* snaketools: SnakeRule now registers with SnakeRun
* snaketools: added attr SnakeRule.extra for more params
* snaketools: added attr SnakeRun.rules
* snaketools: use __all__ for importing from file
* update makefile
* update reqs

===================

* added rewrite_snakefile_no_rules()
* flake8
* requirements.txt: removed dev-reqs
* requirements.txt: pinned flake8
* setup.py: upgraded to read from req files
* MANIFEST.in: include req files
* upgraded Makefile
* tox.ini: set line-length etc
* setup.cfg: ignore W292
* setup.cfg: exclude lib & bin from flake8
* updated .gitignore
* added coveralls badge
* HISTORY.rst: replaced header text

===================

* requirements_dev.txt: update and pin reqs
* flake8 fixes
* tox.ini: simplified config
* added flake8 to reqs

===================

* added preliminary test suite
* Makefile: changed `install` to use `pip install -e .`
* added example files for testing
* requirements.txt: created with `pipreqs`
* snaketools.py: reorder functions
* snaketools.py: formatting
* ignore .vscode/
* pin all reqs since pyup now manages

===================

* Configure pyup
* SnakeRun.d -> SnakeRune.interim_dir