XML documentation

[adambajguz]

Proposal:
Add XML documentation to all types, methods, etc.

Current behavior:
No XML documentation in the libraries.

Desired behavior:
All APIs, classes, etc. should be annotated with XML documentation comments.

[adambajguz]

I've just discoverd that in the source code the XML documenation is present but in the NuGet it is not.

This may be due to missing <GenerateDocumentationFile>true</GenerateDocumentationFile>

[powersj]

This may be due to missing true

Happy to see a PR with this change!