Alerts fail due to
    - lapse in audio category change
App crashes when switching on "Monitor Sensors" because
    - audio unit initialization fails with an error code -50. This
      didn't happen before and working on finding cause.
Two known error's-
    - "AudioUnitInitialize" which returns an error code "-50 paramErr
      :Error in user parameter list". CURRENTLY NO IDEA HOW TO FIX IT

    - "[[noiseAudioSession] setActive: NO error: &err]" which fails on
      stopping the de-activating the AudioSession and does not allow the
      program to recover the AudioSession. CURRENTLY NO IDEA HOW TO FIX
      IT
Merge pull request #109 from mbaptist23/sensor_integration

Sensor integration