Support for multiple pattern predicates in or
o Ands and Ors ASTNodes uses Sets rather than Lists
Documentation fixes for 2.1.

* Added UNWIND to refcard.
* Better links to other resources.
* Typos.
* Added refcard the docs build.
Merge pull request #2462 from davidegrohmann/pattern-predicates

Support for multiple pattern predicates in or
Merge pull request #2465 from nawroth/2.1-fixes

Documentation fixes for 2.1.
Make NodeHashJoinPipe null safe
Tagging for version 2.1.0
Back to development version.
Update SNAPSHOT version after 2.1 release.
Merge pull request #2472 from systay/null-safe-hash-join

Make NodeHashJoinPipe null safe
Update SNAPSHOT versions in POMs for 2.2.
Bump the version for bin dependencies on Cypher 1.9 and 2.0
Update the 2.0 SPI after upgrading to 2.0.3

This should not be necessary as LOAD CSV is not part of 2.0.
This can be removed once we remove the CSV SPI bits from 2.0.
Fix PROFILE CYPHER 2.0 in 2.1
Merge pull request #2486 from jakub-/cypher-profile-fixes

Bump the version for bin dependencies on Cypher 1.9 and 2.0
Introduced a new way to write planner tests

Moved CartesianProductPlanningIntegrationTest to this new way
Merge pull request #2487 from systay/planner-tests

Introduced a new way to write planner tests
Truffle