[pull] master from ethereum:master#27

Merged

tonyredondo merged 5 commits into

scope-demo:masterfrom

ethereum:master

Feb 27, 2020

Commits on Feb 25, 2020

internal/ethapi: default to zero address for calls (#20702)

holiman
and
fjl
authored

Commits on Feb 26, 2020

les: separate peer into clientPeer and serverPeer (#19991)
rjl493456442
authored

Commits on Feb 27, 2020