* Revive fixes regarding following set of rules:
[rule.if-return]
[rule.increment-decrement]
[rule.var-declaration]
[rule.package-comments]
[rule.receiver-naming]
[rule.unexported-return]
Metrics that are unserializable will be logged at debug level, but the
rest of the batch will be sent. Unserializable metrics can occur during
normal operation such as if you remove all fields from a metric or the
metric cannot fit within the line size limit.
Sven Rebhan
Paweł Żak
Daniel Nelson
Daniel Nelson