PR 61 - base64/layering - ready for real review
So I pushed a more complete layering/base64 implementation.
There's 10 commits now, so eventually they'll get squashed.
But It's ready for a real PR review now, not just a preliminary look see.
It implements base64_MIME, gzip, lineFolded_IMF, and lineFolded_iCalendar layer transforms.
Not yet done: quoted printable, encodedWord, other compressors, AIS,....
However, I believe these can be added quite straightforwardly now.