v0.5.1

• Reduce inbound stream idle timeout (time before we kill idle streams) from 10 to 1 minute. This should reduce memory consumption.
• Update dependencies.
• Make the routing table's latency tolerance (max latency of peers in the routing table) configurable.
• Obey context when blocking on sending messages to peers.
• Fix a timer leak.
• Improve metrics.
  • Name metric views.
  • Count message and request attempts so the message count is always greater than the error count.
  • Don't count stream resets as message errors (unless we receive a partial message).
• Make sure to cleanup all goroutines when canceling a query.