Fix mistake, need to check absolute value, so we allow negatives through
Merge pull request #550 from Arvoreen/master

Fix mistake, need to check absolute value, so we allow negatives through, fix for pull# 525
New annotations
Improves the ScheduledReporter#stop method.

Re: report of scheduled reporters not shutting down (#551).
Fix formatting
AdminServlet generates pretty print link to healthchecks.
Merge pull request #553 from jsyrjala/healthcheck-pretty-link

AdminServlet generates pretty print link to healthchecks.
Updating to httpclient 4.3

Removing deprecated classes and following new 4.3 builder creation pattern.
Updating docs
Merge pull request #555 from Banno/upgrade-httpclient-4.3

Updating to httpclient 4.3

Closes #538
Upgrade slf4j to version 1.7.6

http://www.slf4j.org/news.html
Merge pull request #556 from jsyrjala/slf4j-1.7.6

Upgrade slf4j to version 1.7.6
metrics-core: Fix race condition in InstrumentedThreadFactoryTest.
adding third part component for Apache Camel
formatting fixes
Merge pull request #562 from sfosdal/patch-1

Added third party component for Apache Camel
Merge pull request #560 from udoprog/master

metrics-core: Fix race condition in InstrumentedThreadFactoryTest.