Added new Observe cancellation and updated dependent Block behavior (bumped version and Sc dependency version).
Clean-up with major renaming.
Fixed missing Query in URI string.
Improved variable size notifications.
Improved Block+Observe handling.
Updated copyright info.
Restructured ETSI Plugtests package and renamed client to checker (it only checks server behavior and does not test client API).
Fixed Link Format hasObservable() and improved getTitle().
Excluded entry point resource from Link Format serialization (i.e., only children now).
Added automatic Observe re-registration.
Extended CoapClient API.
Added PlugtestClient to test client functionality with CoapClient API.
fixed typo. it should be csv, not cvs
Merge pull request #62 from ssogabe/fixed-typo

fixed typo. it should be csv, not cvs
Activated push to Maven releases repo.
Removed snapshot dependencies (#60) and updated to Sc with final TLS cipher suite value for final version (continued as Eclipse project).
Merge remote-tracking branch 'origin/coap-18' into user-principal-support
Merged with latest changes on coap-18 branch,
export element-connector package from californium-osgi in order to
provide access to ConnectorFactory