Merge updates downstream#20

Merged

5chdn merged 9 commits into

goerli:masterfrom

openethereum:master

Nov 22, 2018

Commits on Nov 17, 2018

Keep existing blocks when restoring a Snapshot (#8643)

ngotchac
authored and
5chdn
committed
Unbreak build on rust -stable (#9934)

reyk
authored and
tomusdrw
committed

Commits on Nov 18, 2018

Update eth-secp256k1 to include fix for BSDs (#9935)

reyk
authored and
sorpaas
committed

Commits on Nov 20, 2018

allow rust-nightly builds fail in nightly builds (#9944)
gabreal
authored

Commits on Nov 21, 2018