Update OfficeCryptCodecHandler encodingKey comments
Thanks for this amazing project, it's an incredible resource on MS Access interoperability. The comment on line 68 of OfficeCryptCodecHandler suggests the value of the encoding key might be meaningless aside from being zero/nonzero. In other places (e.g. AgileEncryptionProvider) the encoding key is used in the decryption. Hence I wondered if it might be possible to amend the comment in OfficeCryptCodecHandler. (This would be a very useful comment for readers, because it is different to what is suggested...