General
- Give precedence to user-defined filetype extension mappings over default ones (PR#2166).
- Give precedence to the longest matching filetype pattern (Issue#1499, Issue#1921, PR#2167).
- Place the socket file in
$XDG_RUNTIME_DIRwhen available (Thomas Martitz, PR#2222).
Bug fixes
- Improve path ellipsising in Go To Tag filetype popup (Thomas Martitz, PR#2262).
Interface
- Show group prefix for the Various preferences (PR#2176).
- Show the GTK/GLib versions in about dialog (PR#2163).
Editor
- Update Scintilla to version 3.10.4 (PR#2138).
- Add support for fractional font sizes (Pedro Henrique Antunes de Oliveira, Issue#703, PR#2250).
Filetypes
- Add Apple Swift filetype (Ankit Pati, PR#1323).
- Add Nim filetype (Simon Krauter, Issue#1772, PR#2085).
- Update NSIS keywords (PR#2181).
- Update error matching for the CUDA filetype (Rajesh Pandian M, Issue#2213, PR#2218).
- Add Kotlin custom filetype (Issue#1581, PR#2186).
- Add Groovy custom filetype (PR#2188).
- Add TypeScript custom filetype (Issue#1449, PR#2187).
- Small update of Django keywords (PR#2315).
- Don't suggest to override all settings through Tools->Configuration Files (Issue#1552, PR#2168).
Windows
- Migrate the installer to NSIS 3 (Issue#1302, PR#2181).
- Fix build on recent MSYS2 (Issue#2261, PR#2263).
Internationalization
- New translations: ku
- Updated translations: da, de, es, fr, it, ja, lv, pt, sk, sv, zh_CN