Update nicfit.py to 0.8.1

[pyup-bot]

This PR updates nicfit.py[cookiecutter] from 0.8 to 0.8.1.

Changelog

0.8.1

--------------------

New
~~~
- Nicfit.shell (211)
- Nicfit.Command.CommandDict, a builder of new instances for subclasses.

Changes
~~~~~~~
- Add_subparsers 'dest' argument is optional, defalts to 'subcmd'
- Better badge links in readme, and no longer include HISTORY.rst in
project long_description.
- Devel: Added pyaml main requirement.
- Nicfit.py is added as a requirement in cookiecutter builds.
- `make clean-test` removes .pytest_cache/
- Added CC opts add_docs and requirements_yaml.

Fix
~~~
- SubCommandCommand can nest subparsers.
- Path to str conversion (for pypy3)

Other
~~~~~
- Update certifi from 2018.1.18 to 2018.4.16 (212) <github-botpyup.io>
- Update check-manifest from 0.36 to 0.37 (210) <github-botpyup.io>
- Update deprecation to 2.0.2 (209) <github-botpyup.io>
- Update sphinx_rtd_theme from 0.2.4 to 0.3.0 (208) <github-
botpyup.io>
- Update deprecation to 2.0.1 (207) <github-botpyup.io>
- Update tox from 2.9.1 to 3.0.0 (206) <github-botpyup.io>
- Update python-dateutil from 2.7.1 to 2.7.2 (203) <github-botpyup.io>
- Pin pyaml to latest version 17.12.1 (204) <github-botpyup.io>
- Update wheel from 0.30.0 to 0.31.0 (205) <github-botpyup.io>
- Update python-dateutil from 2.7.0 to 2.7.1 (202) <github-botpyup.io>
- Update pytest from 3.4.2 to 3.5.0 (201) <github-botpyup.io>
- Update sphinx from 1.7.1 to 1.7.2 (200) <github-botpyup.io>
- Update twine from 1.10.0 to 1.11.0 (199) <github-botpyup.io>
- Update pytest-runner from 4.0 to 4.2 (198) <github-botpyup.io>
- Update python-dateutil from 2.6.1 to 2.7.0 (196) <github-botpyup.io>
- Update curio to 0.9 (195) <github-botpyup.io>
- Update packaging from 17.0 to 17.1 (192) <github-botpyup.io>

Links

• PyPI: https://pypi.org/project/nicfit.py
• Changelog: https://pyup.io/changelogs/nicfit.py/
• Repo: https://github.com/nicfit/nicfit.py/releases/downloads/v0.8.1/nicfit.py-0.8.1.tar.gz

[coveralls]

Coverage remained the same at 70.137% when pulling 16da96d on pyup-update-nicfit.py-0.8-to-0.8.1 into 30f1196 on master.