Created the ButtonHelper.PreserveTextCase class to override the case behavior for certain buttons
Added an explanation comment for the PreserveTextCase property
Added some tests for the buttons
Merge pull request #1622 from MahApps/button-preserve-casing

Created a button helper to override the text case behavior for buttons
Windows 8 dialogs don't have lower case text in the buttons, so should match that behavior
Update 1.0.0.md
Eliminated the need to pass the owning BaseMetroTabControl to MetroTabItem
removed superfluous property OwningTabControl from MetroTabItem
updated migration guide
using TreeHelper.TryFindParent
Merge pull request #1623 from MahApps/dont-lowercase-dialog-buttons

Don't lowercase the dialog buttons
Update 1.0.0.md
removed obsolete c'tor
don't know where this using came statement from...
Code cleanup
Merge pull request #1624 from thoemmi/MetroTabItem-without-OwningTabControl

Eliminated the need to pass the owning BaseMetroTabControl to MetroTabItem
Update 1.0.0.md
Code cleanup