chore(package): update ember-composability to version 0.3.1
chore(package): update ember-composability to version 0.3.1

http://greenkeeper.io/
rynam0/ember-cli-materialize,rynam0/ember-cli-materialize,mike-north/ember-cli-materialize,dortort/ember-cli-materialize,truenorth/ember-cli-materialize,sgasser/ember-cli-materialize,dortort/ember-cli-materialize,dortort/ember-cli-materialize,sgasser/ember-cli-materialize,rynam0/ember-cli-materialize,sgasser/ember-cli-materialize,mike-north/ember-cli-materialize,truenorth/ember-cli-materialize,mike-north/ember-cli-materialize,truenorth/ember-cli-materialize