- Bumps version to 0.8.0-alpha
- Introduces 'makemigrations_translation' command to avoid generating
wagtailcore_page migrations
- Adds 'sync_page_translation_fields' which mimicks
'sync_translation_fields' but restricts it to Page model
- This change introduces breaking changes and has no migration script to
move from 0.6 to 0.8
- Updates tests