* p2p: add protocol Version to NodeInfo
* update node pkg. remove extraneous version files
* update changelog and docs
* fix test
* p2p: Version -> ProtocolVersion; more ValidateBasic and tests
* ungitignore
* add docs/.vuepress to enable local builds
* config.js needs to be here, one less step
* docs: make spec in sidebar nicer
* docs: local build instructions
This now uses one hkdf on the X25519 shared secret to create
a key for the sender and receiver.
The hkdf call is now just called upon the computed shared
secret, since the shared secret is a function of the pubkeys.
The nonces now start at 0, as we are using chacha as a stream
cipher, and the sender and receiver now have different keys.
As we didn't hear any voices requesting this feature, we removed the
option to disable it and always have peer connection auth encrypted.
closes#1518
follow-up #1325
