Admittedly it's been a very mild winter here in London town, but that doesn't mean that we can't have a new APOC release!

Contributions for new procedures, fixes, and documentation updates came from @conker84, @mneedham, and @karmakaze.

Happy developing!
@JMHReif and @mneedham

Quick List of Changes

add recursive parameter for map.removeKey and map.removeKeys (fix for #1270)
add apoc.systemdb.graph for details of system database in Neo4j
add apoc.systemdb.execute to execute DDL commands against system database in Neo4j (fix for #1357)
add exception handling for apoc.xml.import on config error
add apoc.nodes.relationship.types and apoc.nodes.relationship.exists to check relationships across multiple nodes (fix for #1136)
add apoc.date.parseAsZonedDateTime to parse date with time and timezone

Bug fixes

fix for apoc.load.xls range issue with columns after Z (fix for #1342)
fix for apoc.cypher.runFile to not fail on an empty transaction (fix for #1262)
fix for apoc.periodic.* to improve logging (fix for #1363)
fix for apoc.export.cypher.* to correctly handle multiple labels (fix for #1366)
fix for apoc.export.csv.graph to handle internal and business ids in data (fix for #1335)

move configurations to 1. environment variables, 2. system properties, or 3. apoc.conf file
complete list of configurations moved is in docs(https://neo4j.com/docs/labs/apoc/4.0/config/)

add feedback form in documentation pages - let us know where we can improve the docs!
refactored documentation pages for apoc.export.csv and apoc.export.json
fix for apoc.load.jsonParams to add documentation and test (fix for #1279)