A general purpose Reactive Programming (FRP) system. This is part of a project to implement reactive libraries with similar interfaces across a range of programming languages at http://reactiveprogramming.org/

Goals include simplicity and completeness.

Applicative style: Event implements Functor and Behaviour implements Applicative.

Instead of the common approach where inputs are fed into the front of a monolithic 'reactimate', Sodium allows you to push inputs in from scattered places in IO.

Integration with IO: Extensible to provide lots of scope for lifting IO into FRP logic.

Push-based imperative implementation.

See the examples directory for test cases and examples.

Changes: