The size of CloseButton presented in MetroTabItem will be changed proportionately considering its HeaderFontSize. In addition, an example has been added into MetroDemo project.
Support for .NET 4.5.
Changed style of DataGridNumericUpDownColumn when Column has IsReadOnly=true.
The new behaviour is, that instead of IsEnabled, IsHitTestVisibile is set to false.
Now in a DG-NUD-C the Background of the column is transparent in DefaultElementStyle
MetroCircleButton: Made Border customizable and Disabled state better distinguishable

It was very hard to tell if a MetroCircleButtonwas disabled without hovering it, this is fixed now, also the border can now be customized.
[NUD] Padding property in NumericUpDown is now used
Remove MetroTabItemCloseButtonFontSizeConverter.
Merge pull request #1310 from oloopy/MetroTabItem-CloseButtonSize

The size of CloseButton in MetroTabItem will be changed proportionately.
Merge pull request #1335 from xxMUROxx/hotfix/MetroDataGridCheckBox

Changed style of DataGridNumericUpDownColumn
Merge pull request #1336 from stefan-schweiger/patch-1

MetroCircleButton: Made Border customizable and Disabled state better distinguishable