Changes
- OmniForm instance should be passed to related forms in wagtail admin views [PR](https://github.com/omni-digital/omni-forms/issues/37)
- Prepopulates the form instance for newly created related model instances [PR](https://github.com/omni-digital/omni-forms/pull/38)
- It must be possible to override the base form class for a given field or handler in wagtail [PR](https://github.com/omni-digital/omni-forms/issues/39)
- Add method to related form views for wagtail that allows the base model form class for related models (fields/handlers) to be overridden [PR](https://github.com/omni-digital/omni-forms/pull/40)
- Allows users to specify their own form locking logic [PR](https://github.com/omni-digital/omni-forms/pull/42)
- Readthedocs integration [PR](https://github.com/omni-digital/omni-forms/issues/43)
- Ensure edit/delete links for fields and handlers are not rendered if the form is locked [PR](https://github.com/omni-digital/omni-forms/pull/47)
- Add data to the omniform model admin list to show whether a form has been locked or not [PR](https://github.com/omni-digital/omni-forms/pull/48)
- Add handler for sending an email to an address submitted via the form using an email field [PR](https://github.com/omni-digital/omni-forms/pull/50)
- Make the OmniRelatedField abstract [PR](https://github.com/omni-digital/omni-forms/pull/52)