MODE-1750  FullTextSearch Left/Right outer join invalid behavior on null join value
MODE-1750 Ignored two of the TCK tests due to errors in the tests.

See MODE-1758 for more detail on the tests and their errors.
MODE-1751 - Updated the algorithm via which nodes update their referrers as result to changes in reference properties.
Removed unused imports
MODE-1755 Exposed the 'getPlan():String' method on ModeShape's QueryResult public API
MODE-1750 Ignored two of the TCK tests due to errors in the tests.

Corrected the link to the JCR project's JIRA in the POM file.
See MODE-1758 for more detail on the tests and their errors.
MODE-1755 Implemented 'getPlan' in other implementation classes
MODE-1756 Updated the copyright dates and contributors
Copied the LICENSE files inside the top-level directory, which is recommended for projects on GitHub.
Updated release notes for 3.1.0.Final
Changed version number to 3.2-SNAPSHOT