+ play: * use the url template from the routes file as default trace name(basic implementation), and closes #82
* minor refactor in RequestInstrumentation
+ statsd: allow percent-encoding of metric section names, related to #46
= play: fixes #84
+ play-example: * updated play to 2.3.3
* TraceLocal to MDC example
* AsyncAppender
= play: update play to 2.3.3
+ play-examples: update example
update sbt-aspectj plugin
update play version to 2.3.4
disable a test in WSInstrumentation because fail in travis
+ github: contributing guidelines.
= core: fix NPE when finishing segments, fixes #88
= core: remove a println left from testing
= play-examples: update kamon dependencies to snapshot until next release
! kamon-newrelic: * Avoid reporting data to Newrelic if no metrics have been collected
								  * Implement error handling with NewRelic Agent                                                                                                                          * Minor refactor                                                                                                                                                        * close issue #7 and issue #17
! build: upgrade dependencies.
= core: use explicitly thrown exceptions for failure tests.
= system-metrics: handling sigar.getLoadAverage gracefully on unsupported systems
! build: more version upgrades + include sbt-dependency-graph
+ core: provide sum and percentile functions in Histogram.Snapshot, closes #85
= kamon-newrelic: minor refactor when merge metrics
! kamon-core: Remove KamonWeaverMessageHandler to avoid dependencies issues and closes #97
+ system-metrics: introduce Context Switches(only for Linux) metrics and closes #66
+ log-reporter: introduce ContextSwitches metrics