Updating version for new branch

New version for new development branch.
Revised the way binding works

Introduced multiple DOM helpers
Revised binding and unbinding to use new DOM helpers
dom binder unit tests

Additional test case for verifying unbinding of dom binders (say that
one 3 times fast).
Merge pull request #15 from KrisSiegel/0.4.0-development

0.4.0 development