Changelog:
============
Features
--------
Add 'strict' to flatten_query_params to lower-case bools (#433) (83678e9)
Make grpc transcode logic work in terms of protobuf python objects (#428) (c3ad8ea)
Bug Fixes
---------
Require python 3.7+ (#410) (7ddb8c0)
Restore support for grpcio-gcp (#418) (8c19609)
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
