4.0.0

• Compiled and targeted JDK8
• Support for running under JDK9 #1236
• Move JMX reporting to the metrics-jmx module
• Add Bill of Materials for Metrics #1239
• Used Java 8 Time API for data formatting
• Removed unnecessary reflection hacks for HealthCheckRegistry
• Removed internal LongAdder
• Removed internal ThreadLocalRandom
• Optimized generating random numbers
• Timer.Context now implements AutoCloseable
• Upgrade Jetty integration to Jetty 9.4
• Support tracking Jersey filters in Jersey resources (#1118, #1193)
• Add ResponseMetered annotation for Jersey resources (#1186)
• Add a method for timing non-throwing functions. (#1224)
• Unnecessary clear operation for ChunkedAssociativeArray (#1211)
• Add some common metric filters (#1210)
• Add possibility to subclass Timer.Context (#1226)