Channel state api

Only slow down tracing tests if stdout isatty

Reduce mac CI load

Document finish

Require very explicit registration of non-SSL hosts in Objective-C.

Fix memory leaks

Re-enabling tests that got culled off.

Clarify interop spec

Reduce mac load on Jenkins

Test both SSL and cleartext calls in Obj-C

Support test certificates and SSL name override in Obj-C

Allow fixtures to specify slowdown factors, use it for grpc_trace tests

Delay name resolution until we need a channel to be READY

C++ propagation API

Core-supported context propagation

Introduce client-side CallOptions 

It’s a typedef of an anonymous struct.

Add project metadata generation to Python.