Replaced default property values with constants
Updated image selection algorithm
Changed default image sizing behavior and default control size, added new CropMode to allow resizing the image to fill the control's dimensions
Added code to update the image when the control is resized in the designer
Renamed DefaultAudience enum to Audience
Added CurrentUser property to LoginControl
Updated sample application to bind to new CurrentUser property and display a caption with the user's name below the profile picture