Documentation is available via godoc at https://godoc.org/github.com/Shopify/sarama.
Sarama provides a "2 releases + 2 months" compatibility guarantee: we support the two latest releases of Kafka and Go, and we provide a two month grace period for older releases. This means we currently officially support Go 1.3 and 1.4, and Kafka 0.8.1 and 0.8.2.
Sarama follows semantic versioning and provides API stability via the gopkg.in service. You can import a version with a guaranteed stable API via http://gopkg.in/Shopify/sarama.v1.
Other related links:
Copyright (c) 2015 Shopify. Released under the MIT-LICENSE.