Mats Rydberg

This is important to get the latest security fixes from jackson. Users of jjwt-jackson have to exclude and manually upgrade this dependency otherwise.

[Rendered CIP](https://github.com/Mats-SX/openCypher/blob/delete-semantics-2/cip/1.accepted/CIP2018-10-19-Delete-Semantics.adoc) Implements the 'Strict' semantics mentioned in #263. In summary: - a deleted element behaves identical to a `null` value - similar to a non-match by `OPTIONAL MATCH` -...

[CIP](https://github.com/Mats-SX/openCypher/blob/plus-operator-cip/cip/1.accepted/CIP2017-05-18-Plus-operator.adoc) References #189

Add Neo4j index extension CIP

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This reflects a Neo4j extension of the constraints syntax suggested in #166 to support index creation/deletion. [Direct link to CIP](https://github.com/Mats-SX/openCypher/blob/neo4j-indexes/cip/vendor-extensions/neo4j/CIP2016-12-14-Neo4j-indexes.adoc)

Specifying Cypher constraints

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Specifies syntax for constraints and specifies three concrete constraints: node property uniqueness, node property existence, and relationship property existence. [CIP](https://github.com/Mats-SX/openCypher/blob/constraints-cip/cip/1.accepted/CIP2016-12-14-Constraint-syntax.adoc)

[Direct link to CIP](https://github.com/Mats-SX/openCypher/blob/create-dynamic-labels/cip/1.accepted/CIP2020-07-31-Dynamic-label-creation.adoc)

[Direct link to CIP](https://github.com/Mats-SX/openCypher/blob/subquery-parameters/cip/1.accepted/CIP2020-04-27-Subquery-parameters.adoc)

UNWIND CIP

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[CIP](https://github.com/Mats-SX/openCypher/blob/unwind-cip/cip/2.testable/CIP2017-04-24-UNWIND.adoc)

Based on #354