BUGFIX in SqliteQueueStore: resultSets and statements should be closed.
Javadoc fixes - preparation for Java 8 strict javadoc standard.
Mark as new bugfix version.
Merge branch 'hotfix-sqlite-resources' into develop
  Apply javadoc changes and add sqlite support as provided to pom xml
Move SqliteQueueStore in the main aspirin project.
 Refactor: extract SQL strings in a separated properties file.
Introduce MimeMessageWrapper class to support additional mail headers.