Changes and new features
Dropped support for Windows XP.
Upgraded to SciTE/Scintilla 5.2.2 and Lexilla 5.1.6.
AutoHotkey v1.1.34 syntax definition updates.
AutoHotkey v2.0-beta support, including a completely rewritten new lexer.
Keyword definitions are now almost entirely sourced from the AutoHotkey documentation instead of maintained by hand.
Introduced new SciTE4AutoHotkey style format (s4ahk.style=2). Version 1 styles are automatically converted when edited by the style editor. Older legacy styles are no longer supported.
Introduced new default Light/Dark styles (replacing the previous collection of built-in styles).
The code font is now independently configured and no longer depends on the selected style.
Enhanced the graphical settings and style editors to support more common options.
Merged numerous Debugger improvements and bug-fixes, courtesy of Lexikos.
SciTE4AutoHotkey is now registered as an "Open With" application for .ahk files.
Added Swedish translation (courtesy of Mikael Hiort).
Added Korean translation (courtesy of joyfuI).
Added mechanism for disabling global Toolbar buttons.
Added support for passing parameters to debugged scripts.
Known issues
Calltip functionality has been temporarily removed as a side effect of the new syntax definition autogeneration, as well as SciTE limitations.
Help file word lookup is currently broken as a result of (not so) recent changes in AutoHotkey's CHM file.
Debugging AutoHotkey v2 scripts is known to sometimes produce crashes under certain circumstances.
AutoHotkey v2 AutoIndent only works when control flow statements are typed in lowercase.
Bug-fixes
The auto-updater now behaves properly if the update server is down instead of behaving erratically.
Many other miscellaneous fixes, optimizations, code modernisation and cleanup.