Add sequenced one-to-one batch throughput test
remove misplaced millis suffix
Arbitrary PhasedBackoffWait fallback strategy

* Instead of specialized locking and sleeping
blocking strategies, allow using any WaitStrategy
as a fallback blocking strategy.

* Make SleepingWaitStrategy configurable to allow
for sleeping immediately without any retries, as
wanted by PhasedBackoffWaitStrategy.
Merge pull request #72 from danielnorberg/arbitrary-phased-backoff-wait-fallback

Arbitrary phased backoff wait fallback + typo fix
Merge pull request #71 from danielnorberg/1p1c-batch-benchmark

Add sequenced one-to-one batch throughput test
Fix checkstyle