Merge pull request #1 from openwide-java/wicket-6

Added support to Wicket 6 - Upgrade to Select2 3.2
fix multiplechoice initialization
Merge pull request #2 from kharmander/master

fix multiplechoice initialization
Merge branch 'master' of github.com:openwide-java/wicket-select2 into owsi
[maven-release-plugin] prepare release wicket-select2-1.1.5