Merge branch 'master' into merge/release/5.0-preview8-to-master

.github/ISSUE_TEMPLATE/razor_tooling.md

AspNetCore.sln

dockerbuild.sh

docs/BuildFromSource.md

eng/Version.Details.xml

eng/Versions.props

....AspNetCore.Analyzers/test/PubternabilityAnalyzerTests.cs

src/Components/Authorization/src/AuthorizeRouteView.cs

src/Components/Authorization/test/AuthorizeRouteViewTest.cs

src/Components/Components/src/EventCallback.cs

src/Components/Components/src/EventCallbackOfT.cs

src/Components/Components/src/RenderTree/Renderer.cs

src/Components/Components/src/Rendering/ComponentState.cs

...nts/Components/src/Routing/OptionalTypeRouteConstraint.cs

src/Components/Components/src/Routing/RouteEntry.cs

src/Components/Components/src/Routing/RouteTemplate.cs

src/Components/Components/src/Routing/TemplateParser.cs

src/Components/Components/src/Routing/TemplateSegment.cs

src/Components/Components/test/EventCallbackTest.cs

...omponents/Components/test/ParameterViewTest.Assignment.cs