Moved SelectedElement in BaseClass.

Changed to Framework 4.5, because ItemContainerGenerator Items Property in then public, and I want WeakEventManager.

VisualTreeAssist: Rename Childs by Children

BrowseTextBox: Prevent browse button to be shared if placed in the same panel

EventToCommand: Add EventToCommand to be able to connect control events to ICommands via bindings

ListBehavior: Add ListBehavior with click and doubleclick behaviors in UI lists

EnumerationComboBox: Take enum type from the SelectedItem when set without a binding

EnumerationComboBox: Take type from the SelectedItem as fallback if EnumType is not set

Release 5.4.0

Repair bad documentation format;

Fill up all usage documentations

Update usage of the EnumerableComboBox in the WPFMessageBoxDemo user control

EnumerationComboBox: Renew the control with more possibility how to display the values (Thanks to Christoph Dreßler!)

NumberBox: When value is null step up and step down starts from the minimum or maximum value (Thanks to Thomas!)

NumberBox: Handle up and down steps differently in the case of an invalid value