This includes:
- makefile to assist with development environment
- support for basic commands to parse and validate mots.yaml
- support for modules and submodules
- support for a directory and searchable index
- cli interface
- tests

TODOs:
- add more environment-specific variables to be by mots internally
- add circleci and readthedocs configuration
- improve documentation
- improve readability of fixtures

NOTE: could also break this into different branches and facilitate code
review that way.

Includes:
- PMO and BMO thin clients that were used to parse and validate users
- bug fix to return rejected paths when querying
- cli command to add module (already obsolete?) and helper function
- bug fix when determining repo path in config (was fetching bad index)
- Directory class improvements, including:
    - new People and Person helper classes
    - load people into Directory.people
    - serialize people and rewrite yaml when needed
    - validate people against BMO user IDs
- improvement to yaml config format including using named anchors
- improved logging
- helper function to parse user string (used in import, but reusable)
- fixed serialization of modules
- fixed references to people in yaml (uses nick-named anchors now)

TODO:
- improve PMO/BMO client implementation
- clean up helper functions
- refactor/clean up module.py to have less repetition in submodules
- move `extract_people` to utils
- add more tests and mock BMO client

- fix bug with BMO token input
- fix bug with `module add` command

- add readthedocs config
- update directory query response to use QueryResponse class
- conftest bug fix

- update QueryResult.__add__ to return a QueryResult object
- minor fixes to documentation
- add test for QueryResult
- update command line usage in docs
- temporarily move readme to readthedocs link

- fix QueryResult.rejected_paths sum to find intersection only
- add wiki export functionality (bug 1743476)

- add hashes to requirements file + make command

- use isoformat for timestamps
- add parse_real_name method to parse bmo data into name and info

- fix typo in command help
- fix query command output
- fix FileConfig default argument when loading config

- fix peers attribute on module
- fix description attribute on module
- return submodules and parent when serializing

- add export to rst functionality; deprecate wiki export

- Fixes bug 1750200 (yaml_set_anchor issue)

- Fix `mots module add` command so that it adds bmo_id key
- Fix `mots init` command to include "people" key

- generate separate requirement files for each supported python
- update requirements to latest versions where applicable
- update make commands to auto-generate requirements and environments