Merge pull request #51 from quintonm/master

Fix failing test
added sonar reference to site
added thanks section to site (to fulfill the yourkit license requirement)
Merge pull request #53 from p6spy/yourkit

sonar referenced and thanks section added to site
Merge pull request #54 from quintonm/master

Issue #49 - align com.p6spy.engine.leak with the other modules
Merge pull request #55 from quintonm/master

Issue #40 : remove dead code
Merge pull request #58 from quintonm/master

Issue #50: enable proxying just by modified JDBC connection URL
Issue #59 - Separate documentation by version