Log Message:
py-uvloop: updated to 0.13.0

v0.13.0

New Features
Implement Server.start_serving() and related APIs.
Make Server an asynchronous context manager.

Performance
Start using high-performance uv_udp_t handle. This
should result in a significantly faster UDP support.
Make address validation faster in udp.sendto().

Misc
OSError is no longer logged by Transports.
This matches asyncio behaviour in 3.8.

Build
Upgrade to libuv v1.31.0.
Use manylinux-2010. This means we no longer provide
32bit builds for Linux.