Merge pull request #14 from llh1/master

Merge from development branch
Merge pull request #15 from llh1/master

Fix specs (remove dirty attributes related specs as it's not used yet on master branch)
Add spec for combine tube creation & label action.
Add labels to CreateTube action.

refactor slightly CreateTubeBulk
Don't create Labellable if labels is empty. All specs pass.
Bump version 1.3.0
Merge pull request #17 from maxigit/51059369_combine_label_and_creation

51059369 combine label and creation