Merge branch 'main' into winui

Author: azchohfi

.editorconfig

@@ -6,6 +6,9 @@ root = true
 
 #### Core EditorConfig Options ####
 
+# Encoding
+charset = utf-8
+
 # Indentation and spacing
 indent_size = 4
 indent_style = space
@@ -103,8 +106,8 @@ csharp_new_line_between_query_expression_clauses = true
 csharp_indent_block_contents = true
 csharp_indent_braces = false
 csharp_indent_case_contents = true
-csharp_indent_case_contents_when_block = true
-csharp_indent_labels = one_less_than_current
+csharp_indent_case_contents_when_block = false
+csharp_indent_labels = no_change
 csharp_indent_switch_labels = true
 
 # Space preferences

.github/ISSUE_TEMPLATE/bug_report.md

@@ -38,9 +38,9 @@ If applicable, add screenshots to help explain your problem.
 ## Environment
 <!-- Check one or more of the following options with "x" -->
 ```
-NuGet Package(s): 
+NuGet Package(s):
 
-Package Version(s): 
+Package Version(s):
 
 Windows 10 Build Number:
 - [ ] Fall Creators Update (16299)
@@ -64,9 +64,9 @@ Device form factor:
 - [ ] Surface Hub
 - [ ] IoT
 
-Visual Studio 
+Visual Studio
 - [ ] 2017 (version: )
-- [ ] 2019 (version: ) 
+- [ ] 2019 (version: )
 - [ ] 2019 Preview (version: )
 
 ```

.github/ISSUE_TEMPLATE/feature_request.md

@@ -13,7 +13,7 @@ IF NOT CERTAIN ABOUT THE FEATURE AND REQUIRE MORE CLARITY THEN PLEASE POST ON "I
 
 ## Describe the problem this feature would solve
 <!-- Please describe or link to any existing issues or discussions.
-A clear and concise description of what the problem is, starting with the user story. 
+A clear and concise description of what the problem is, starting with the user story.
 Provide examples of the restrictions in the current environment that hinders the work your users or you want to perform. What are the ways this new feature will help transform and deliver those results?
 For example, I am currently using the InfiniteCanvas control which lacks the TabbedCommandBar control feature. I am looking to improve user experience therefore i would like to use that in my project to provide ease of accessibility and a user-friendly interface. This new feature will provide quick access to the toolbar, enhance space utilization, etc [...] -->
 

.github/ISSUE_TEMPLATE/win32_controls.md

@@ -2,7 +2,7 @@
 name: Win32 Controls
 about: I have an issue with a Toolkit WPF or WinForms control
 title: "[Win32]"
-labels: 
+labels:
 assignees: ''
 
 ---

.github/PULL_REQUEST_TEMPLATE.md

@@ -43,7 +43,7 @@ Please check if your PR fulfills the following requirements:
 - [ ] Header has been added to all new source files (run *build/UpdateHeaders.bat*)
 - [ ] Contains **NO** breaking changes
 
-<!-- If this PR contains a breaking change, please describe the impact and migration path for existing applications below. 
+<!-- If this PR contains a breaking change, please describe the impact and migration path for existing applications below.
      Please note that breaking changes are likely to be rejected within minor release cycles or held until major versions. -->
 
 

.runsettings

@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <RunSettings>
   <MSTest>
     <MaxCpuCount>0</MaxCpuCount>

CommunityToolkit.Common/Attributes/NotNullIfNotNullAttribute.cs

@@ -1,4 +1,4 @@
-// Licensed to the .NET Foundation under one or more agreements.
+// Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
@@ -26,4 +26,4 @@ internal sealed class NotNullIfNotNullAttribute : Attribute
     }
 }
 
-#endif
+#endif

CommunityToolkit.Common/Attributes/NotNullWhenAttribute.cs

@@ -1,4 +1,4 @@
-// Licensed to the .NET Foundation under one or more agreements.
+// Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
@@ -26,4 +26,4 @@ internal sealed class NotNullWhenAttribute : Attribute
     }
 }
 
-#endif
+#endif

CommunityToolkit.Common/Collections/IReadOnlyObservableGroup.cs

@@ -1,4 +1,4 @@
-// Licensed to the .NET Foundation under one or more agreements.
+// Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
@@ -24,4 +24,4 @@ public interface IReadOnlyObservableGroup : INotifyPropertyChanged
         /// </summary>
         int Count { get; }
     }
-}
+}

CommunityToolkit.Common/Collections/ObservableGroup.cs

@@ -1,4 +1,4 @@
-// Licensed to the .NET Foundation under one or more agreements.
+// Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
@@ -77,4 +77,4 @@ public TKey Key
         /// <inheritdoc/>
         object IReadOnlyObservableGroup.Key => Key;
     }
-}
+}