Log Message:
py-uvloop: updated to 0.11.3

v0.11.3:
Bug Fixes
* Use new PyOS_BeforeFork and PyOS_AfterFork_* 3.7 APIs when available
* Fix async generators finalization to function correctly in debug mode
* Pass backlog to loop.create_unix_server() when a server is created via
  loop.create_server(sock=unix_sock, backlog=backlog).
* Don't raise "requires a DNS lookup" error on Unix Domain Socket
* Fix use of PyContext* APIs in 3.7.1