v1.0.1: Higher default producer timeout

The default timeout for producing a message is raised in this release to 10 seconds from 2 seconds. Connecting to a Kafka broker with TLS and SCRAM authentication can take at least 2s normally with a round-trip latency of 100ms between the producer and broker, which resulted in the first message timing out consistently. 10s is a more reasonable default for producing to a broker over the internet.

In addition, #38 fixes a minor formatting bug when warning about reading from a LATEST offset, and #39 removes fastavro as a dependency because it is no longer used since v1.0.0.