Merge pull request furdarius#9 from furdarius/no-route-ensure-pub

EnsurePublisher handles no-route error

Merge pull request furdarius#8 from furdarius/default-reconnect-attem…

…pts-MaxUint32

Set default max reconnect attempts to math.MaxUint32.

Merge pull request furdarius#6 from furdarius/fix-data-race-on-conn-elem

Fix data race occurs on connection problems.

Merge pull request furdarius#3 from furdarius/fireforget

Add FireForgetPublisher.