[maven-release-plugin] prepare release email-preview-2.0.4
[maven-release-plugin] prepare release email-preview-2.0.4

Jasig/email-preview,kdjohnson/email-preview,is-apps/email-preview,doodelicious/email-preview,kdjohnson/email-preview,doodelicious/email-preview,is-apps/email-preview,Jasig/email-preview