v1.3.1

Fixes

• Add inline namespace so that libraries using different backends (Boost.Asio, standalone Asio or libunifex) can be linked together (as long as asio-grpc is not part of their public headers)

Style

• Move GrpcSender and ScheduleSender into the detail namespace
• Remove template parameter from UseScheduler
• Remove unused arguments in streaming-server.cpp example