Libraries

• Improve FileSettingsStore exception handling

• Add Load/SaveSplits methods to WindowSaver
• Change AboutBox background to control brush again

Made some WPF-related enhancements in Menees.Windows.Presentation while working on RegExponent:

• Added RecentItemList<T>
• Added PlaceholderTextHelper to support attached PlaceholderText (watermark) property for TextBoxBase and PasswordBox
• Made AboutBox look for ProductUrl in assembly metadata
• Made some methods virtual on PropertyChangeNotifier
• Supported ConvertBack on InverseBooleanConverter

• Added workaround for WPF 6.0.2 bug that affected Menees.Windows.Presentation.dll

• Changed default HighDpiMode to DpiUnawareGdiScaled to work best in my WinForms apps.
• Add workaround for WinForms 6.0.2 problem (https://github.com/dotnet/core/issues/7176).

• Removed use of WMI (System.Management) types.

• Replaced Microsoft.Windows.Compatibility package references with the few smaller packages that were actually required.

• Fix nullability for ExtendedRichTextBox.Text.
• Fix VS main window handle conversion to IntPtr.

• Updated target frameworks to .NET Framework 4.8 and .NET 6.0.
• Enabled nullable reference types.
• Switched to Shouldly for unit test assertions.

• Removed Menees.Common dependency on GetForegroundWindow (for issue #2)

• Added Diagnostics.Release class to check for latest GitHub release info.
• Added automatic "check for update" to About boxes for Windows.Forms and Windows.Presentation.

• Added PostShowWindowCommand for MegaBuild.

• Added OutputWindow.IndentWidth for MegaBuild.

• Added several helper types and functions for my new WirePeep project.

• Removed *.Core.cs and *.Framework.cs files from NuGet packages as contentFiles.

• Added VisualStudioUtility.ResolvePath to Menees.Windows since it's needed by MegaBuild and SharpScript.

• Had to embed the Text Object Model COM interop types for the Menees.Windows.Forms OutputWindow control to work correctly.

• Fixed resource problems in Menees.Diffs.Windows.Forms due to its default namespace change
• Changed the Menees.Diffs.Controls namespace to Menees.Diffs.Windows.Forms to match the assembly name

• Exposed C# dynamic support for COM objects in .NET Core.
• Added descriptions to NuGet packages.

• Fixed some missing resources in Menees.Windows.Forms and Menees.Windows.Presentation.