v2.41

• Fix sorting words that are incompatible with the current locale (#778, #779, Oussama Jarrousse).
• Add dark mode instructions to built-in help documentation (#848, @jendrikseipp).
• Fix options dialog not closing when OK button is clicked (#857, @jendrikseipp).
• Replace AppVeyor CI with GitHub Actions workflow for Windows builds (@jendrikseipp).