* all: reboot noise

* github: fix ci actions

* readme: remove update notice and put in pr

* ci: remove travis config and update codecov

* client, msg: do not export UnmarshalMessage
make: add test and test-coverage
github: fix codecov report

* github: fix yml error

* github: prettify yaml

* github: revert to executing actions only on push

* keys: add docs

* github, license: add CODEOWNERS and update LICENSE
readme: document defaults and dependencies

* addr, id, mod: add docs
readme: tidy up

* node, protocol, kademlia: rename Binder to Protocol

* msg, client: do not export Marshal() for message
mod, msg: add docs for what happens when you return an error in a Handler, and for HandlerContext

* ecdh, client: separate ecdh from protocol handshake into separate export function

* readme: add more details

* codec: do not export Codec
kademlia/binary: add doc for SortByDistance
keys, node, node/opts: add docs

* keys, mod, codec/test: fix lint errors
id: add additional comments

* kademlia/protocol, kademlia/iterator, kademlia/table: have all read-only funcs accept noise.PublicKey instead of a full noise.ID
kademlia/msg: have FindNodeRequest only require a noise.PublicKey
keys: rename PublicKeySize, PrivateKeySize to SizePublicKey, SizePrivateKey

* kademlia: add docs

* readme: add github actions shield