Merge pull request #298 from TheBlueMatt/2019-01-271-cleanup

Implement serialize/deserialize for Router

diff --cc src/ln/channel.rs
Simple merge

diff --cc src/ln/channelmanager.rs
Simple merge

diff --cc src/ln/channelmonitor.rs
Simple merge

diff --cc src/ln/msgs.rs
Simple merge

diff --cc src/ln/peer_handler.rs
Simple merge

diff --cc src/ln/router.rs
Simple merge

diff --cc src/util/ser.rs
Simple merge