aiomonitor v0.4.0

Changes

• Added support for custom commands #133 (thanks @yggdr)
• Fixed OptLocals being passed as the default value for "locals" #122 (thanks @agronholm)
• Added an API inspired by the standard library's cmd module #135 (thanks @yggdr)
• Correctly report the port running aioconsole #124 (thanks @bmerry)