Breaking 5.0.0 Changes

[Keboo]

There is an existing 5.0.0 branch where these changes are being made. Once we are a little closer to the release this branch will be merged into master. Anyone is welcome to pick up tasks here and PR into the 5.0.0 branch.

This is a list of proposed breaking changes for the 5.0.0 release. Feedback welcome!

• [x] Remove DrawerHostOpenMode.Model (Added in 4.0.0, Obsolete in 4.1.0)
• [x] Remove MaterialDesignScrollBarThumbVertical and MaterialDesignScrollBarThumbHorizontal replace with MaterialDesignScrollBarThumb
• [x] Consider making recommended theme color classes static.
  • Currently not possible because they implement the ISwatch interface.
• [x] Update ListBoxItem to use theme brush for hover color rather than deriving from the Foreground.
• [x] Update MenuItem to use theme brush for hover color rather than deriving from the Foreground.
• [x] There is a both usage of "Assist" and "Extensions" used. Consider standardizing on naming
• [x] Remove MaterialDesignRaisedAccentButton in favor of MaterialDesignRaisedSecondaryButton
• [x] Remove MaterialDesignFlatAccentButton in favor of MaterialDesignFlatSecondaryButton
• [x] Remove MaterialDesignFlatAccentBgButton in favor of MaterialDesignFlatSecondaryMidBgButton
• [x] Remove MaterialDesignFloatingActionMiniAccentButton in favor of MaterialDesignFloatingActionMiniSecondaryButton
• [x] Remove MaterialDesignFloatingActionAccentButton in favor of MaterialDesignFloatingActionSecondaryButton
• [x] Remove ComboBoxPopupPlacement
• [x] Remove obsolete members from ComboBoxPopup
• [x] Remove obsolete templates PopupContentUpTemplate and PopupContentDownTemplate
• [x] Remove obsolete brushes #2435
• [x] Replace usages of "Accent" with "Secondary"
• [x] Remove "MaterialDesignNavigatilRailTabControl" it is replaced by "MaterialDesignNavigationRailTabControl"
• [x] Remove RatingBarButton.IsWithinSelectedValue property
• [x] Remove obsolete members from FlyoutAssist
• [x] Remove ShadowDepth
• [x] Remove ShadowAssist.ShadowEdges
• [x] Rename ShadowEdgeConverter to ShadowOpacityMaskConverter to better reflect its usage
• [x] Ensure all styles and brushes that contain the word "Accent" have been replaced with "Secondary"
• [x] Remove PickerInnerPaddingConverter (obsolete in PR #3181)
• [x] Rename all *Mixin classes to be *Extensions
• [x] Remove MaterialDesignTheme.Defaults.xaml in favor of people using either MaterialDesign2.Defaults.xaml or MaterialDesign3.Defaults.xaml
• [x] Ensure all removed obsolete styles exist in the Obsolete shim resource dictionary.

[jizc]

Might be good to add "Remove ShadowDepth" here. Context: #2786

[MichelMichels]

I'm in favor of dropping the netcoreapp3.1 target framework moniker as it reached it's end-of-life on December 13th, 2022. I'll make a pull request for it.