Docassemble

Added
- The `tagged pdf` option for `docx template file` document assembly.
Changed
- The `pdf/a` options now create PDF/A documents directly with
LibreOffice.
- The `comma_list()` and `comma_and_list()` now work with a wider
variety of iterables.

Added
- Support for sending text messages using WhatsApp using `send_sms`.
Changed
- Non-required file upload variables will be set to `None` instead of
being ignored.
Fixed
- Unicode error during package upgrade when `pip show` returns bytes
that cannot be decoded as UTF-8.
- JavaScript error with Google Maps.

Changed
- Upgraded Font Awesome to 5.7.2.

Fixed
- Unicode problem with user names.
- Unicode problem with OCR.
- SQL concurrency problem with row updates.
- The `instanceName` on file uploads.

Changed
- The `error help` metadata specifier now accepts a dictionary of
language codes and messages.
Added
- The `verbose error messages` configuration directive.
Fixed
- Unicode problem with Markdown documents.
- Deep copy error with `get_question_data()`.

Changed
- Group gathering with `ask_number=True` will use the value of
`there_are_any` if it is defined and set to false.
- When editing list using a table, completeness of elements will be
re-evaluated.
- Back button embedded in question is now "link" style.
Added
- The `subject_as_html()` and `content_as_html()` methods of objects
generated from a `template`.
- The `hide navbar` feature.
- The `js_target` URL parameter for embedding the **docassemble**
interview into an element on another web site.
- The `gathered_and_complete()` method of the `DAList` and `DADict`.
Fixed
- Error logging in with Auth0 in Python 3.
- The `comma_and_list()` function was not Unicode-friendly.
- Method of adjusting encryption of interviews in session after
logging in was inefficient.
- API verification not working in Python 3.
- Screen reader in Python 3.
- Playground commit not pushing to organizational repositories.