Right now the RSS reader doesn't support the itunes:author tag because it has no xmlns support so it can't pull the speaker name.

1. Replace the rss-feed lib with a custom implementation
2. Announce the speaker name after the sermon title e.g. "Playing sermon title by speaker name"

Currently it's only possible to play the latest sermon. It should be possible to:

1. Play next
2. Play previous
3. Shuffle On
4. Shuffle Off

When the device emits a AudioPlayer.PlaybackNearlyFinished request (to enqueue the next track) the request is marked as unhandled. See: https://developer.amazon.com/docs/custom-skills/audioplayer-interface-reference.html#playbacknearlyfinished

Example request

{ 
    type: 'AudioPlayer.PlaybackNearlyFinished',
    requestId: 'amzn1.echo-api.request.93d2365d-ce82-4d12-84e5-14dd2d336873',
    timestamp: '2018-01-24T12:33:58Z',
    locale: 'en-GB',
    token: 'Joshua - Take Down Fear by Joshua Gardiner',
    offsetInMilliseconds: 0 
}

To compound this, the un-handled request flow emits a speak directive which cannot be emitted for a AudioPlayer.PlaybackNearlyFinished request

{ 
    type: 'System.ExceptionEncountered',
    requestId: 'amzn1.echo-api.request.2ff75fe4-deb7-409d-9fb6-f137b498b91e',
    timestamp: '2018-01-24T12:33:59Z',
    locale: 'en-GB',
    error: { 
        type: 'INVALID_RESPONSE',
        message: 'The following directives are not supported: Response may not contain an         outputSpeech,Response may not contain an reprompt,Response may not have shouldEndSession set to false' 
    },
    cause: { 
        requestId: 'amzn1.echo-api.request.93d2365d-ce82-4d12-84e5-14dd2d336873' 
    } 
}

It should be possible to handle intents that skip back/forward a certain number of minutes via a slot. The utterances would be

"Alexa, skip back" (default to 30 sec)
"Alexa, skip back {SLOT} minute
"Alexa, jump forward" (default to 30 sec)
"Alexa, jump forward {SLOT} minute