Merge pull request #74 from doug-martin/master

v0.1.11
Merge pull request #75 from doug-martin/master

v0.1.12
v0.1.13

* Fixed issue #68 where `matchUntilHalt` uses a lot of CPU
* Fixed issue #45, now compiled rules support `or` constraint with more than 2 inner constraints.
* Added new feature to address #76, now you can use `deleteFlows` to dispose all flows, or use `hasFlow` to check if a flow is already registred with `nools`.