support netty4 & optimize channel in client#595

Merged

rayzhang0603 merged 6 commits intoweibocom:masterfrom sunnights:netty4

Dec 5, 2017

+1,807-3

Commits on Nov 16, 2017

feat: support netty4
sunnights
committed

Commits on Nov 22, 2017

netty4 share channel
sunnights
committed

Commits on Nov 23, 2017

fix
sunnights
committed

Commits on Nov 30, 2017

Commits on Dec 4, 2017

fix
sunnights
committed