Merge pull request #235 from brharrington/master

Highly concurrent counters spuriously show only 1 increment for some intervals
Provide a way to update the clock used by monitors
Merge pull request #236 from dmuino/clockOffset

Provide a way to update the clock used by monitors
Deprecate config validation
Add some docs to ClockWithOffset
Merge pull request #237 from dmuino/configValidator

Deprecate config validation
[Gradle Release Plugin] - pre tag commit:  '0.6.4'.
[Gradle Release Plugin] - new version commit:  '0.6.5-SNAPSHOT'.
improve the performance of StepLong#poll. Monitors.newCounter returns a BasicCounter
Merge pull request #238 from dmuino/counters

improve the performance of StepLong#poll. Monitors.newCounter returns a ...
fix tests
[Gradle Release Plugin] - pre tag commit:  '0.6.5'.
[Gradle Release Plugin] - new version commit:  '0.6.6-SNAPSHOT'.
add missing method
Replace unicode char with \u representation
[Gradle Release Plugin] - pre tag commit:  '0.6.6'.
[Gradle Release Plugin] - new version commit:  '0.6.7-SNAPSHOT'.
Add another simple test.
A more efficient implementation of BasicTagList
Merge pull request #240 from dmuino/smallTagMap

A more efficient implementation of BasicTagList