3.3.0

• Performance tuning for a ~10% improvement on DBMonster (basically 10% faster diff algorithm)
• Refactored diff algorithm to be easier to follow
• Add Component.prototype.forceUpdate() method.
• Fix a bug where a child component of a high-order component self-rendering (eg: via setState()) would cause a subsequent re-render of the parent component to re-initialize itself and the child (through the recycler, but this was causing thrash).
• Fix an issue where nested components would not receive unmount lifecycle hooks (fixes Issue #47)