Python-dotenv

- Improve interactive mode detection ([andrewsmith])([183]).
- Refactor parser to fix parsing inconsistencies ([bbc2])([170]).
- Interpret escapes as control characters only in double-quoted strings.
- Interpret `` as start of comment only if preceded by whitespace.

- Add type hints and expose them to users ([qnighy])([172])
- `load_dotenv` and `dotenv_values` now accept an `encoding` parameter, defaults to `None`
([theskumar])([earlbread])([161])
- Fix `str`/`unicode` inconsistency in Python 2: values are always `str` now. ([bbc2])([121])
- Fix Unicode error in Python 2, introduced in 0.10.0. ([bbc2])([176])

- Fix parsing of variable without a value ([asyncee])([bbc2])([158])

- Add support for UTF-8 in unquoted values ([bbc2])([148])
- Add support for trailing comments ([bbc2])([148])
- Add backslashes support in values ([bbc2])([148])
- Add support for newlines in values ([bbc2])([148])
- Force environment variables to str with Python2 on Windows ([greyli])
- Drop Python 3.3 support ([greyli])
- Fix stderr/-out/-in redirection ([venthur])