Missing dependency

Fix build

Add DCO config

Fix some broken tests

Update actions

Ensured tabs are used instead of spaces for indentation

Ensured the libs supplied via the 'thin.libs' argument are put in front of the classpath to take precedence over the resolved dependencies

Use maven.home if it exists

Improve implementation of settings home

Add optional local deployment to nexus

Look in other places for settings.xml

Switch to publicly available gradle jars

Use base class for exception

Alter pipeline to push plugin to Gradle

Revert to snapshots