4.2.0

This release is the first to be published at Maven Central - https://search.maven.org/artifact/com.marklogic/ml-gradle

Most of the changes in this release can be found in the ml-app-deployer 4.2.0 release notes and the ml-javaclient-util 4.2.0 release notes, which includes upgrading the MarkLogic Java Client version to 5.4.0.

The few changes to ml-gradle itself consist of:

• Updates to example projects - #462, #545, #578, and #590
• This project now uses version 6.9 of the Gradle wrapper; the 3 JavaExec tasks - CorbTask, MlcpTask, and ShellTask - now use "mainClass.set" instead of "setMain", the former being the preferred approach in Gradle and now required by 6.x