Merge pull request #144 from gwynne/closable-server-stream

Make it possible to explicitly close ServerStreams without deallocating them

Merge pull request #140 from TG908/upd-socket-flag-enum

Upd socket flag enum

Merge pull request #136 from vapor/swift4

Swift4

Merge pull request #133 from vapor/eagain

fix eagain linux

Merge pull request #132 from vapor/two

2.0

Merge pull request #130 from vapor/connect-fix

connect fix

Merge pull request #129 from vapor/write

write

Merge pull request #121 from vapor/connection-error

scheme info in connection error

stream buffer big chunk performance improvment

Merge pull request #120 from vapor/buffer-cutoff-fix

buffer cutoff fix