General

• added support for Qt5 (experimental)

Debugger

• added the capability to trace function calls and returns to the Python 2 and Python 3 debuggers

Debug Viewer

• added a viewer for call trace logs

Editor

• added actions to search for the next/previous occurence of the current word (default shortcuts Ctrl+. and Ctrl+,)
• added some icons to the "Languages" and "End-of-Line Type" context menus

IRC

• added a simple IRC client

Spell Checker

• added a dialog to edit the various spell checking dictionaries

Syntax Checker

• added capability to the syntax checker dialog to show all errors/warnings in an editor when the file entry is double activated

User Interface

• changed the layout of the right side widgets and added a sub menu for the switching between the 'inner' windows.
• added a notification system

View Manager

• added actions to open the find in files and replace in files dialogs in a mode that searches open files only
• change the status labels for programming language and end-of-line type to show an icon