* Remove two dependencies that are now not needed, `monotonic` and `future`
6.0.1
* Properly block old versions of python from installing the new version
6.0.0
* Removed support for old versions of python. * Drop support for Python 2.7, and versions of Python 3 below 3.6.
5.7.1
* Support PyJWT 2.0
5.7.0
* We added `letter_contact_block` to our template object serialization, which means it will be added to responses for `get_template_by_id` requests and also `get_template_version` and `get_all_templates` . This version adds this new `letter_contact_block` attribute to Documentation and tests.
5.6.0
* Add support for an optional `is_csv` parameter in the `prepare_upload()` function. This fixes a bug when sending a CSV file by email. This ensures that the file is downloaded as a CSV rather than a TXT file.