2.4.0 (2016-03-31)

• Support foreign thenables in resolve(). Any object that provides a then() method is now assimilated to a trusted promise that follows the state of this thenable (#52).
• Fix some() and any() for input arrays containing not enough items (#34).

2.3.0 (2016-03-24)

• Allow cancellation of promises returned by functions working on promise collections (#36).
• Handle \Throwable in the same way as \Exception (#51 by @joshdifabio).

2.2.2 (2016-02-26)

• Fix cancellation handlers called multiple times (#47 by @clue).

2.2.1 (2015-07-03)

• Fix stack error when resolving a promise in its own fulfillment or rejection handlers.