Set up your .NET Core project in the version you want. I support projects 1.1 and 2.0 to work with this. Then try adding nuget to the project.
For example, ASPOSE will NOT add 1.1 to the project, but will add 2.0 to the project.
The easiest route in the short term, until they fix it somehow.
Obviously, this is not a guarantee that it still works, but it gives you a good idea if its api compat.
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