Pyasista

- *user_guide()* method is added to the **AsistaInput**.

- *timeout* property is added to the **AsistaInput**.

- Environment string for Environment.PROD changed from *PROD* to *PRODUCTION*. If you are using **Environment** you should update your *pyasista* version to keep things working.

- Following static methods are added to *AsistaOutput* to create lambda outputs easier:
- **AsistaOutput.with_stream(data):** Creates an instance of *AsistaOutput* with command PLAY_STREAM.
- **AsistaOutput.with_announce(data):** Creates an instance of *AsistaOutput* with command PLAY_ANNOUNCE.
- **AsistaOutput.with_stop():** Creates an instance of *AsistaOutput* with command STOP.
- **AsistaOutput.with_noaction():** Creates an instance of *AsistaOutput* with command NOACTION.

- Birth!