6.0.1

⚠️ Breaking changes

• #80 The ES5 import has been moved from fluture/es5 to fluture.
• #80 The Future#hook method (but not the function) has been removed.
• #80 The Future#cache method (but not the function) has been removed.
• #80 Old environments are asked to bring their own polyfills for
  Object.create, Object.assign and Array.isArray.
• #96 The arguments to the ap-method have been flipped back.
• #97 and and or no longer run the two Futures in parallel.
• #98 fromPromise has been renamed to encaseP.
• 1a636d5 chainRec is no longer curried and direct use is now discouraged.

✨ New features

• #80 Added an ES6 module for use with tools like Rollup.
• #80 All transformations, including recursive chain, are now stack safe!
• #80 Added isNever.
• #98 Added tryP, the nullary version of encaseP.

🐛 Bug fixes and improvements

• #98 Errors thrown while transforming Futures produced by tryP or encaseP
  no longer get caught (and silenced) by the Promise.
• #80 User-supplied functions no longer have strict arity requirements.
• #80 Future.hook no longer cancels the acquire Future after it has settled.
• #80 Future.hook now always cancels running Futures appropriately.
• #80 Added aliases attempt = try, go = do, lastly = finally.
• #102 Supplying incompatible or outdated instances of Fluture now throws more
  sensible error messages.
• 192c34b Added fast failure to encase and encaseP.