v0.3.0

• Upgrade to when.js 3, which brings great performance improvements and better debugging facilities. If you maintain a Mopidy client, you should review the differences between when.js 2 and 3 and the when.js debugging guide.
• All promise rejection values are now of the Error type. This ensures that all JavaScript VMs will show a useful stack trace if a rejected promise's value is used to throw an exception. To allow catch clauses to handle different errors differently, server side errors are of the type Mopidy.ServerError, and connection related errors are of the type Mopidy.ConnectionError.