- Move some of the imageio classes and test cases to a new submodule imageio-util (imageio-core)
    - ImageReaderBase
    - ImageWriterBase
    - Maybe something in the adapter folder?
- Test cases for the OLE2Compound stuff
- Move encoder/decoder streams to separate subpackage "enc"
- Test cases for encoder/decoders
- Test cases in general
- Remove lots of the old imageio code
- Remove some of the old SQL stuff?