Released 4.1.1

Update documentation for 4.1.0

Released 4.0.0!

Release v3.1.0 which includes DKIM support

javadoc update

[maven-release-plugin] copy for tag simple-java-mail-2.3

[maven-release-plugin] copy for tag v2.1

release v2.0 tag from trunk rev. 148

Updated Simple Java Mail v1.9 with Maven support (library hasn't chan…

…ged), from trunk rev. 142