Update to 2.8.0
- Translation updates from Weblate for ca, de, es, fr, nl, pl, uk
- Update emoji annotations from CLDR
- Update emoji data to Unicode 13.0 final
- New option to choose whether spellchecking is done on the preedit
and which colour to use
- Spellcheck typed string in preedit and colour it if it is likely to be misspelled
- More test cases for spellchecking and spellchecking suggestions
- Restructure code for spellchecking and spellchecking suggestions