Version 2019.11.17.0

This will be the last release that supports Visual Studio 2015. The next release will be updated to use .NET 4.7 and Visual Studio 2017 or later.

Sandcastle Tools

Updated the Generate Inherited Documentation tool to issue a warning (GID0010) if it finds the deprecated select attribute on the inheritdoc element.
Fixed the URL resolver so that the web client connection uses TLS 1.2 which is now required by the server hosting the service.

Merged changes into the default project template from Tom Englert to allow the help file builder NuGet packages to be referenced and restored within the help file project itself.
Fixed the build engine so that it sets the TargetFramework property in the documentation source project when multi-targeting is being used. This allows other properties that use it to be resolved correctly.
Fixed documentation assembly determination by checking the TargetExt property and using it as the target assembly extension when the output type is "Exe". This solves a problem with web SDK projects that output a native code host runtime assembly alongside the actual DLL.

Updated the XML comments guide inheritdoc documentation to note that the select attribute has been deprecated in favor of the path attribute to be consistent with upcoming support for the element in Visual Studio 2019's IntelliSense.