* Python 3 support.
Supported versions: 2.6, 2.7, 3.6, 3.7
* New CLI option: `--import-env` that imports environment variables into the template
* New options: `--filters` and `--tests` that import custom Jinja2 filters from a Python file
* Fix: trailing newline is not removed anymore
* Fix: env vars with "=" in values are now parsed correctly
* Fix: now unicode templates & contexts are fully supported