3.0 Release

[sdirix]

• [x] Create Changelog (@LukasBoll)
• [x] Release JSON Forms 3.0 (@sdirix)
• [x] Update all seed applications (@LukasBoll) (Review: @lucas-koehler)
  • [x] React
  • [x] Angular
  • [x] Vue
  • [x] Vue2
• [ ] Update website with JSON Forms 3.0 and Api Docs (@LukasBoll) (Review: @lucas-koehler)
• [ ] Review/Merge open Website PRs (@sdirix) (@lucas-koehler)
  • [ ] https://github.com/eclipsesource/jsonforms2-website/pull/239
  • [ ] https://github.com/eclipsesource/jsonforms2-website/pull/235
  • [ ] https://github.com/eclipsesource/jsonforms2-website/pull/227
  • [ ] https://github.com/eclipsesource/jsonforms2-website/pull/224
  • [ ] https://github.com/eclipsesource/jsonforms2-website/pull/222
• [ ] Release JSON Forms 3.0 Vuetify Renderers (@sdirix)
• [ ] Announce release on Twitter and Website (@sdirix)