Metrics 3.0.0 released

[Coda Hale]

Hoo boy. Metrics 3.0.0 is on its way to Maven Central.

It has the following changes from RC1:

• Renamed DefaultWebappMetricsFilter to InstrumentedFilter.
  
• Renamed MetricsContextListener to InstrumentedFilterContextListener and made it fully abstract to avoid confusion.
  
• Renamed MetricsServletContextListener to AdminServletContextListener and made it fully abstract to avoid confusion.
  
• Upgraded to Servlet API 3.1.
  
• Upgraded to Jackson 2.2.2.
  
• Upgraded to Jetty 8.1.11.
  

Thanks for your input, pull requests, bug reports, and patience.

--
Coda Hale
http://codahale.com