0.6.6

• New adapted ASR model for English
• Updated ASR model for French with air quality sentences that were missing
• Added new NLU sentences for French & English (currently unused)
• Actually use English ASR model and NLU engine
• Load English or French ASR model & NLU engine when language is changed
• Fixed start_all command which just didn't work
• Check timezone every minute in nabclockd to take any change into account (#45)