Version 1.3.2

Updates/fixes:
- Fixed parsing of `Form.settings.collect_emails`.
- `Form.settings.collect_emails` is now an enum.
- `Form.requires_signin` is also true for forms that collect verified emails.

Version 1.3.0

New features:
- Full parsing of `Image` elements and image attachments.
- `Form.load` and `Form.reload` now accept an optional argument `resolve_images`
  (enables parsing of image URLs).
- New attributes for `Video` elements.

Fixes/other:
- More readable `to_str` for options with image attachments.

Enable option image attachments

Fix actions parsing

Fix settings parser

Fix submission result parsing

Fix compatibility for Python<3.8 (fixes #6)

Fix settings parsing

Fix for submissions with emulated history

In the previous version, field name for draft in `Form.submit` was not updated.
It is updated in this version.
(as of 01.11.21, submissions with old element name are still accepted,
but this will likely change in the near future)

Fix parsing (draft field renamed)