v1.0.0 - Rosebud

Say hello to promises!

The whole inquirer API is now based on promises!

• The base API interface is now inquirer.prompt(questions).then(). There's no more callback function.
• Any async question functions is taking a promise as return value instead of requiring this.async().

Breaking changes

• filter is now always run before validate #122
• inquirer.prompt doesn't take a callback argument anymore

Bug fixes

• Fixed list not displayed disabled options correctly #321

And various other minor fixes and cleanup to the code base.