- Update documentation and contact email address.
- Remove unnecessary error set from select() in Process.pm and
  handling method in Transport.pm.
Begin adding support for external IO::Async event loop.
Add peers() method to Net::BGP::Process.
Only stop IO::Async event loop if there are no notifiers - this
prevents removing the last peer from Net::BGP::Process from clobbering
other potential, external users of the event loop.