Fix Qt5 compatibility
Rename MacrosEditorModule into PretexEditorModule
Improve PreTeX Editor Module Plugin
Resize authors photos
Rename MacroExecutionStack into ExecutionStack
Improve PreTeX Editor Module plugin

* Add PretexArray and PretexVariant classes
* Improve LexicalAnalyzer
Improve PreTeX Editor Module plugin

* Add PretexBuiltinFunction, PretexFunction and PretexStatement classes
* Improve existing classes
* Update GPL headers
Improve PreTeX Editor Module plugin
Improve PreTeX Editor Module plugin
Improve PreTeX Editor Module plugin
Improve PreTeX Editor Module plugin
Improve PreTeX Editor Module plugin
Improve PreTeX Editor Module plugin
Improve PreTeX Editor Module plugin
Improve PreTeX Editor Module plugin
Improve PreTeX Editor Module plugin
Improve PreTeX Editor Module plugin
Improve PreTeX Editor Module plugin
Improve PreTeX Editor Module plugin

* Implement recording module
Update translations; update ChangeLog