Fix #129 by adding BackButtonCommand/Parameter
Fix #131 by adding Background default for CustomDialog
changelog update
Changelog for 1.2.6 to note release
Added a ReadOnlyFill property

ReadOnlyFill property for when you want the control to be readonly, but
still want a custom colour showing rather than the default black.
Fixes Bug #47 - provides ability to tie into back button and optionally cancel form closing event
Changing increment buttons to RepeatButtons
Adding DropDownButton
Adding DropDownButton test cases
Adding link to FAQ/Wiki on readme default page
Fixing some Ratings control issues
Merge branch 'master' of https://github.com/timheuer/callisto
Added contribution page
Added fix to avoid live tile flipping when only one item is availble
Merge pull request #178 from dotMorten/master

Don't animate live tile if Count =< 1
Modifications to dropdown sample for font variations
Merge branch 'dev' of https://github.com/timheuer/callisto into dev
Fix #167: Added listener for Window SizeChanged which should cause light dismiss surfaces to dismiss.
Fix #171: Enhancing flyout/IHM placement logic to adjust for more visible input areas in certain scenarios.
Merge https://github.com/lprichar/callisto into lprichar-master