Bump to Beta status
Bump to Beta status

The API is mostly stable, and feeling good about stability of the
failure modes.

ChannelMeter/amqp,beni55/amqp,vektra/amqp,akrennmair/amqp,vektra/amqp,TeamFairmont/amqp,aviau/amqp,streadway/amqp,StephaneP/amqp,gcnonato/amqp,akrennmair/amqp,StephaneP/amqp,beni55/amqp,streadway/amqp,z00223295/amqp,aviau/amqp,ChannelMeter/amqp,gcnonato/amqp,TeamFairmont/amqp,z00223295/amqp