Add basic support for netcore#190

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Commits on Aug 12, 2020

Add workaround for netcore
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Commits on Aug 13, 2020

Update dnlib to latest version, and handle typeforward in netcore for InjectHelper
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bugfix
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use `System.Runtime.Loader.AssemblyLoadContext.Default.LoadFromStream(new MemoryStream(array))` in netcore
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