Checkstyle Checks

ReturnSeparationCheck - ensures that a return statement has a new line before it, if its not the first statement in a block.
MultilineStatementCheck - A multiline statement or block, must be preceeded by an empty line. Optionally allowing a variable definition to be immediately before it

<module name="ReturnSeparation"/>
<module name="MultilineStatement">
  <property name="allowVarDefBeforeBlock" value="True"/>
</module>

Signing

Requires gpg to be installed and a key to be in the keychain
Requires that the gpg-agent to be installed, and the password to be cached (non-interactive)
Requires that the $USER_HOME/.gradle/gradle.properties to be configured with these options:

signing.gnupg.executable=/usr/local/bin/gpg signing.gnupg.optionsFile=/$HOME/.gnupg/gpg.conf signing.gnupg.keyName=0xF1CAB289
Requires the version to be a released version