updated templates/README.md

Don't do a "safety" Cancel when recv_close_on_server.cancelled is set.

Fix run_tests.py reporting for multiple test runs

Simplify PHP installation

Fix flaky test:  End2endServerTryCancelTest.ResponseStreamServerCancelAfter 

clang-format sanity fix

Remove broken test

This test is inherently flaky and I don't see any way to make it not so.
Historically this test has not (in my memory) given any signal that something is actually broken.

Let's save maintenance and just nuke it.

Copyright updates.

Address some memory hazards in Cython code

Remove binary tags, restrict tag characters to ASCII

Fix sanity test for C#'s 'build_packages.bat.template'

Windows C# distribtests

Package protoc artifacts for all platforms in Grpc.Tools nuget

Stress test scripts to launch in GKE

Some __dealloc__ methods were calling Python methods, and some
references were being dropped on the floor instead of threaded through
gRPC core.

Allow new credential types to be added to tests.

Added a test to verify user agent prefix can be set correctly.

tools/gke directies and instead create tools/gcp). Move scripts around
in to the appropriate directories

tools/gke directies and instead create tools/gcp). Move scripts around
in to the appropriate directories