Improved User Interface Mockups and UML Sequence Diagram Editing

New Elements of User Interface Diagram

Expansion Table and Detail Expansion in Action

Added Expansion Table element (User Interface Diagram)
Added Detail Expansion element (User Interface Diagram)
Added Drop Down Button (User Interface Diagram)
Inserting UML sequence messages using drag&drop
ALT key for temporary disabling any snapping and preferred sizes effects
Improved snapping to snap lines
Alternative style is applied also to UI Grid row header
Added support for strikethrough, superscript and subscript format to HTML export
Added support for numbered lists to HTML export

Fixed error after switching diagrams [RQ#1526]
Fixed UI Grid layout calculation
Fixed element renaming in diagram
Fixed activation of underlying elements when double-click a selected element
Fixed losing the point definition for oblique line with multiple control points after loading a project [RQ#1511]
Fixed unclosed lists in HTML export
Fixed ignoring diagram size in exported PDF documents via batch export [RQ#1527]
Fixed ignoring selected default folder in following File Save dialog for diagram export to image
Fixed saving global documentation script templates (added save alert box)
Fixed style of title label with active element name in Tracked Changes form
Fixed confusing opening a documentation template in template management tab when it is already open in a separate tab
Fixed application crash when trying to delete a newly created documentation template script
Fixed rendering lines in IDEF1X entities without attributes or keys
Fixed applying multi-level numbering format to formatted text