v1.3-alpha1 - Wagtail 4 support

What's Changed

• Wagtail 4.0 compat by @janbaykara and @zerolab in #613 (via #60)
  • Fix compatiblity with main by @zerolab in #588
  • Fix changed register_page_listing_more_buttons signature by @zerolab in #599
  • Fix TestSubmitPageTranslationWithComponents for Wagtail 4 by @gasman in #601
• Support DeepL free API endpoint by @ramiboutas in #604
• Bump terser from 4.8.0 to 4.8.1 by @dependabot in #594
• Use Flit for packaging by @engineervix and @chris48s in #589

New Contributors

• @engineervix made their first contribution in #589
• @janbaykara made their first contribution in #602
• @ramiboutas made their first contribution in #604

Full Changelog: v1.2.1...v1.3.0-alpha.1