Improving "IN" behaviour

See #24

Adding special handling of NULL with "="

"= null" now gets transformed into "is null" automatically

Releasing v1.1

1.1 release adds support for Magic JOINs and Magic Twig.
It also tremendously approve quality of SQL parsing.

First beta version for 1.1 release

1.1 release adds support for Magic JOINs and Magic Twig.
Plus, it corrects a bunch of bugs!

First release

Merge pull request #1 from rbergDrox/1.0

Fix Parameters with IN condition