Pending

BREAKING CHANGES:

[types] CanonicalTime uses nanoseconds instead of clipping to ms
- breaks serialization/signing of all messages with a timestamp
[abci] Removed Fee from ResponseDeliverTx and ResponseCheckTx
[tools] Removed make ensure_deps in favor of make get_vendor_deps
[p2p] Remove salsa and ripemd primitives, in favor of using chacha as a stream cipher, and hkdf
[abci] Changed time format from int64 to google.protobuf.Timestamp
[abci] Changed Validators to LastCommitInfo in RequestBeginBlock

FEATURES:

[tools] Added make check_dep
- ensures gopkg.lock is synced with gopkg.toml
- ensures no branches are used in the gopkg.toml

IMPROVEMENTS:

[blockchain] Improve fast-sync logic
- tweak params
- only process one block at a time to avoid starving
[crypto] Switch hkdfchachapoly1305 to xchachapoly1305
[common] bit array functions which take in another parameter are now thread safe
[p2p] begin connecting to peers as soon a seed node provides them to you (#2093)

BUG FIXES:

[common] Safely handle cases where atomic write files already exist #2109
[privval] fix a deadline for accepting new connections in socket private validator.