Merge branch 'master' of https://github.com/aritchie/userdialogs.git

Author: aritchie

src/Acr.UserDialogs.Uwp/ProgressContentDialog.xaml

@@ -6,6 +6,7 @@
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     mc:Ignorable="d"
+    MinHeight="0"
     Background="Black"
     Opacity="0.7">