-------------------------------------------------------- Implement PrivValidator Ping sends a ping request to the remote signer

-------------------------------------------------------- Implement PrivValidator

PrepareMainCmd is meant for client side libs that want some more flags This adds --encoding (hex, btc, base64) and --output (text, json) to the comma

Blocking implementation of Prev(). May return nil iff CElement was head and got removed.

Priority reports the application-assigned priority of w.

PrometheusMetrics returns Metrics build using Prometheus client library. Optionally, labels can be provided along with their values ("foo", "fooValue"

PrometheusMetrics returns metrics for in and out events, errors, etc. handled by routines. Can we burn in the routine name here?

Proof returns a simple merkle proof for this node. Panics if i < 0 or i >= len(txs) TODO: optimize this!