3.1.0

• Added optional reason param to promise.timeout to specify your own timeout value.
• Another significant speed bump for when.all (and es6-shim Promise.all)
• More when/monitor/console long stack trace improvements. Traces can track nested async functions even if you forget to return a promise.
• Clean up bower and npm installs by ignoring more markdown files

3.0.1

• API doc updates and fixes
• Improvements to unhandled rejection long stack trace filtering
• Internal performance improvements

3.0.0

3.0.0

• New internal architecture with significant performance improvements and memory efficiency
• New APIs
  • when.try, when.lift, when.reduceRight, when.iterate, when.unfold, when.race
  • promise.with, promise.else, promise.delay, promise.timeout, promise.progress
• New liftAll variants for lifting all of an object's functions in one shot, eg. var promisedFs = node.liftAll(require('fs'))
  • fn.liftAll, node.liftAll, callbacks.liftAll
• when.Promise public, inheritance-friendly, Promise constructor
• New ES6 Promise shim
• Check out the tips for upgrading to 3.0 from 2.x

2.8.0

• Experimental ES6 generator support via new when/generator module, with lift, call, apply.

2.7.1

• Internal changes to reduce overall memory usage, along with minor performance improvements. (#228)

2.7.0

• Added promise.catch and promise.finally as synonyms for promise.otherwise and promise.ensure. (#212)
• New browserify build for those using globals. (#209)
• Added ender support to package.json. (#223)
• Fix compatibility with PhantomJS's CommonJS module support. (#226)
• Fix Sauce Labs tests for pull requests. (#216)
• Added bower.json ignore to trim files installed via bower. (#193)

2.6.0

• New promise.done allows consuming the ultimate value at the end of a promise chain while ensuring that any errors are thrown to the host environment so you get loud stack traces.
• when/node/function bindCallback and liftCallback now behave more like standard node-style APIs in that they allow exceptions to propagate to the host environment for loud stack traces.

2.5.1

• ensure now ignores non-functions, like then does, for consistency. (#207)

2.5.0

• Promises/A+ 1.1 compliant. Passes version 2.0.0 of the Promises/A+ test suite.

2.4.1

• New MutationObserver scheduler further reduces "time-to-first-handler" in modern browsers. (#198)
  • Also, this works around a horrible IE10 bug (desktop and mobile) that renders setImmediate, MessageChannel, and postMessage unusable as fast task schedulers. Many thanks to @plaa and @calvinmetcalf for their help in discovering the problem and working out a solution. (#197)