Report at fixed rate instead of with fixed delay

Minimize reporting drift
Merge pull request #297 from jdanbrown/poll-at-fixed-rate

Report at fixed rate instead of with fixed delay
Update release notes.
Escaping the JMX ObjectName components

These components should be escaped. If they are not escaped, the ObjectName will be interpreted as a search pattern, if for example the metric name contains an asterisc
reverted an accidential code reformatting by my IDE
added constructor to InstrumentedSslSelectChannelConnector to support supplying an SslContextFactory
Merge pull request #309 from codelotus/master

Accept SslContext factory in InstrumentedSslSelectChannelConnector
Merge pull request #305 from BGehrels/master

Added escaping for JMX ObjectName components