libev_connection: use globals to track sigint and sigterm watchers as they are created globally within libev
libev_connection: Fix globals warning
libev_connection: Fix varable naming
libev_connection: tweak docs
Merge branch 'master' of https://github.com/pika/pika
Merge branch 'master' of https://github.com/pika/pika
connection.py: Propagate the force_channel keyword parameter to methods involved in channel creation
merge upstream master
Merge pull request #434 from michaelplaing/master

update libev_connection signal watchers and docs; propagate force_binary flag