Merge branch 'master' into uv_core_transport

BUILD

CMakeLists.txt

INSTALL.md

Makefile

PYTHON-MANIFEST.in

README.md

Rakefile

binding.gyp

build.yaml

config.m4

doc/PROTOCOL-HTTP2.md

doc/fail_fast.md

doc/g_stands_for.md

doc/http-grpc-status-mapping.md

doc/wait-for-ready.md

etc/README.md

etc/roots.pem

examples/cpp/helloworld/greeter_async_client.cc

examples/cpp/helloworld/greeter_async_client2.cc

examples/cpp/helloworld/greeter_async_server.cc