grpcio 1.11.0 on Python PyPI

This is the 1.11.0 release (gorgeous) of gRPC Core.

Please see the notes for the previous releases here: https://github.com/grpc/grpc/releases. Please consult https://grpc.io/ for all information regarding this product.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

Core

Add core underpinnings for TLS session ticket support (#14483)
Experimental support for configurable retries (use at your own risk) (#10684)
Fail calls with wait_for_ready=false on transient resolver failure (#14733)
Fix a call stack ref flake (#14681)
c-ares DNS resolver sorts resolved addresses per RFC 6724 (#13290)
Use socklen_t instead of size_t for address length (fixes use case for some big endian systems) (#14464)
Initial part of channel tracing implementation (#13883, #14746, #14751)
Avoid crashes on environments with hot-plugged CPUs (#14712)
When building from source, Makefile now checks for minimum protobuf version 3.5.0 instead 3.0.0 (#14821)
gRPC Core public header no longer includes inttypes.h (#14676)
CMake improvements:
- Add well-commented examples and continuous test for various ways of building gRPC as a dependency (via ExternalProject_Add in #14822, via add_subdirectory in #14864)
- Remove internal tools from binaries installed by cmake install (#14850)
- Simplify Android build example (#14885)
Enable SO_REUSEPORT in IPv6-only environments as well (#14748)

Improvements in experimental support for Unity - added useful resources and improved support for loading grpc_csharp_ext on Unity (#14576, #14605)
Further prevent name collisions by using only fully qualified type names in C# code generator (#14524)
Fix C# connectivity watcher shutdown race (#14776)

Support for Keep-Alive (#14781)
Experimental C++ podspec now supports Apple framework (#14480)
Allow discarding generated implementation (leaving only protocol) with macro (#14490)
Better handling of network error (#14554)

Add missing -O2 compilation flag for pecl (#14768)
Update the reserved variable list to check in PHP code generator to match protobuf 3.5.0 (#13580)

Progress towards full Beta API elimination (Beta API is and has been unsupported and will go away completely):
- Remove _face_interface_test tests for the Beta API (#14702)
Remove Python background poller thread (#14448)
- Note there is a small change in behavior. Before, clients would detect disconnected channels immediately.
Initial gevent compatibility (EXPERIMENTAL) (#14561)
Release the GIL when calling grpc_call_start_batch to improve performance under multithreaded scenarios. (#14801)

Correct handling of underscores in package names by Protocol Buffers code generator for Ruby (#13634)
Source code and locally compiled (not cross-compiled) shared libraries (grpc_c.so files) are removed from the linux binary packages. This includes the packages targeting the x86_64-linux and x86-linux platforms (#14634)
Bug fix for a use-after-free related to access to a garbage collected object (#14809)
Get rid of the -Wno-format argument to compilation of the ruby extension
Documentation improvements (#14535)
Don’t raise GRPC::Core::CallErrors for failed reads or writes of bidi streaming calls (#14922)
Fix a race condition in an interrupt handler that could cause an assertion failure (#14953)