Cihai-cli

- Update Sphinx 1.7.5. to 1.7.6
- Update cihai 0.8.0 to 0.8.1

This should fix dependency issues with kaptan / pyyaml

- Add vietnamese phonetic to default output in `info` command
- Switch tmuxp config to use pipenv
- Add configuration / make tests for isort, flake8
- Add _Pipfile_
- Add `make sync_pipfile` task to sync _requirements/_.txt* files with *Pipfile\*
- Base package updates

- cihai 0.7.4 to 0.8.0

- Developer package updates (linting / docs / testing)

New:

- sphinx-click 1.2.0
- sphinxcontrib-napoleon 0.6.1

Updated:

- isort 4.2.5 to 4.3.4
- flake8 3.3.0 to 3.5.0
- vulture 0.14 to 0.27
- sphinx 1.5.6 to 1.7.5
- alagitpull 0.0.4 to 0.0.21

- Bump cihai version to 0.7.4

- Bump cihai version to 0.7.2

- Output human-friendly fields only by default
- Use `-a` or `--all` to show all fields
- Rename `lookup` command to `reverse`
- Remove newlines, use click.echo for printing to CLI
- Fix unicode issues on 2.7 in tests and cli

- CLI variable tweaks
- Fix package dependency