Reorganize protocol documents
Add file manifests
Update manifests
Add some fixmes
Add access codes and remove EC encryption

The way I was generating the new levels of EC keys was too novel.
Fix typos, more known issues
More protocol work
Update readme
Update untrusted section
Finish untrusted section
Fix rync extensions to use manifests
Add more notes to rainy day extension
CLI user interface
Add skeleton of central classes
Update README
Add a bit of message parsing
Add more to Message
Implement more of the protocol
Add link to blog
Remove unnecessary signatures

Signatures are expensive to calculate, so it's worth skipping them when
not needed.  It may be worth letting clients combine "update" messages
to further reduce signatures needed.