Use System.Reflection.Metadata for reading assembly metadata #23
Description
The library originally use Assembly.ReflectionOnlyLoadFrom() as a mechanism for reading assembly metadata. This function is no longer supported in netcoreapp, and as a temporary workaround it has been crudely replaced with Assembly.Load(), resulting in unneeded assemblies being loaded in the current context. This should be replaced with something like System.Reflection.Metadata eventually.