better logs in fox_conn_worker

Merge pull request #7 from dziaineka/master

add ability to pass gen_server start options to worker

Merge pull request #6 from dziaineka/master

update amqp client to support OTP 26

more tests, update README

fix log format

small pause between connected and subscribed

re-subscribe if connection alive

fox_subs_worker monitors channel and re-subscribes

Merge pull request #5 from dziaineka/master

fix dead channels giveaway

Merge pull request #4 from dziaineka/master

Remove lager and herd deps. Make logging more specific.