We probably will want to reenable patching of signed assemblies in the future, but it isn't important now. To get it working, will probably either have to do one of:
* Mess around with assembly loading/resolving callbacks to bypass the security check for patched assemblies, if possible
* While patching, adjust any references to patched assemblies to make them weak (remove public key)
* Restrict this functionality to only work on runtimes we can fully control (mono, possibly dotnetcore) - last resort
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