Added 'Clear Networks List' toolbar button.

Fix regression of folding state not being remembered through sessions. (Fix #16597 , #16670 )
Fix “Go To Settings” links in Style Configurator regression (from v8.8). (Fix #16592 )
Fix small regression of tab background (hovered) highlighting issue after drag&drop. (Fix #16559 )
Fix an unresponsive (hang) issue due to hide lines. (Fix #16316 )
Fix installer security issue by using the absolute path instead of an unspecified path (CVE-2025-49144). (commit , fix report on GitHub , fix #16744 )
Installer component “WinGUp”: update cURL to 8.13.0 for fixing cURL’s security issue CVE-2025-0167. (Fix #16531 , #16515 )
Update to scintilla 5.5.7 & Lexilla 5.4.5. (Implement #16649 )
Add feature to update Notepad++ on exit. (Fix #16601 , #13749 , #10317 , #8495 , #8457 , #3755 )
Add “/relaunchNppAfterSilentInstall” command argument for installer. (Fix #issue )
Add feature to set read-only attribute on file so user can toggle (set/remove) read-only attribute of a file. (Fix #326 , #4594 , #6216 , #7841 , #12520 , #15571 , #16603 )
Add new plugin API: NPPM_GETTOOLBARICONSETMODE & NPPN_TOOLBARICONSETCHANGED to get toolbar icon set choice. (Fix #16547 , #16646 )
Deprecate 3 APIs: Deprecate NPPM_GETOPENFILENAMES, NPPM_GETOPENFILENAMESPRIMARY & NPPM_GETOPENFILENAMESSECOND. (Fix #15997 )
Add new feature of using first line of untitled document for its tab name. (Fix #3994 , #16584 )
Enhance NPPM_DARKMODESUBCLASSANDTHEME: Enable darkmode progress bar for plugins. (Fix #16675 )
Various dark mode enhancements. (Fix #16668 , #16674 , #16560 , #16537 , #issue )
Fix right click on caption bar unhidding main menu. (Fix #16652 )
Fix rename tab error message when tab name is unchanged. (Fix #16661 )
Fix Python FunctionList absorbing next function issue if space after colon. (Fix #16636 )
Remove .log from errorlist lexer’s default extensions. (Fix #16627 )
Make raw string syntax highlighting work for Golang. (Fix #16609 )
Fix Notepad++ tray icon lost after Windows Taskbar crashing & being relaunched. (Fix #16588 )
Fix changing toolbar icon set not updating to matching panel icon set. (Fix #16595 )
Fix Windows dialog file list not react with keystroke (character match). (Fix #2239 )
Add “*” mark on modified file entries in “Windows” dropdown menu. (Fix #16542 )