code import
paxos: gofmt code
paxos: add pseudo-code in comments
paxos: add basic state per paxos agreement instance
paxos: add fields in paxos structures
paxos: add a composed proposition identifier
paxos: add basic RPC messages
add rpc handler for prepare, accept
add util functions
paxos: first working propose logic
paxos: impl paxos.Status method
paxos: correcly setup proposed n
paxos: improve logging
paxos: correct paxos.N's comparison semantic and add test cases
paxos: improve logging
paxos: use mutex protect map access to retrieve an paxos instance
paxos: prepare handler update acceptor's processed N
paxos: replace waitgroup by channels + atomic counter
paxos: should use own N value in accept request
paxos: replace rpc by method call for self calls