v2.0.0

From 1.0.0 to 2.0.0

• BREAKING: removed partial functions and fields (toString, isEqual,
  isPending, isResolved, isRejected), since you can't observe them
  always, and it leads to confusing behaviour. This functionality will be
  moved to a co-future later.
• BREAKING: removed default memoisation. Since the Futures are just
  placeholders for actions, it does make sense that chaining a Future twice
  should execute the action twice. When you want memoisation, you can use the
  Future.memoise construct instead of new Future.

// Before:
new Future(function(reject, resolve) { ... })

// Now:
Future.memoise(function(reject, resolve) { ... })