Kalliope

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- Fix: Update request lib to fix security vulnerabilities.
- Fix: Kalliope last stt message available on Cortex.
- Enhancement: Add support for raspberry 3B v1.2 with armv6.
- Enhancement: Introduce new Watson API features.
- Feature: Add support for file template in say neuron.
- Feature: Add a new matching type with 'excluded words' from the user order.
- Feature: Add 'version' neuron to the core.

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- Fix: API receive audio and use now ffmpeg as format converter
- Fix: community signal installation
- Fix: Cortex (kalliope memory) usable with signals
- Fix: making sure the called synapse is execute only once
- Fix: STT correction only affect one synapse
- Fix: STT correction, fixed order is now used in the neuron to get parameters
- Enhancement: Update Google TTS, use a lib instead of manual call. Allow long sentences.
- Enhancement: Move documentation to mkdocs
- Enhancement: Add hook on_start_listening and on_stop_listening
- Feature: add MaryTTS engine
- Enhancement: Update Ansible to the last revision

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- Fix: I/O error on Python 3
- Fix: Snowboy build for Python 3
- Fix: fix kill_switch core neuron
- Fix: error with Jinja lib when installing
- Fix: 'device unavailable' exception should now be handled properly
- Fix: API call when kalliope is processing
- Enhancement: rename 'mute' to 'deaf' in setting and neuron
- Enhancement: create en 'option' setting. Deaf and mute are now placed in this setting
- Enhancement: add mute / unmute hook
- Enhancement: add 'on_stt_error' hook
- Enhancement: add on_processed_synapses hook
- Enhancement: Snowboy lib updated to v1.3.0
- Enhancement: remove shell gui feature
- Enhancement: add Ubuntu 18.04 support
- Feature: Neuron 'settings'
- Feature: Neuron 'brain'
- Feature: Neuron 'signals'
- Feature: stt correction
- Feature: STT timeout
- Feature: Mute (old no_voice flag). Make Kalliope processing neurons without speaking out loud
- Feature: order signal can now skip the trigger to chain orders without waking Kalliope. See 'Signal' neuron
- switch to GNU GPL v3.0 license

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- Fix: recognition option in settings
- Fix: no_voice flag in neurotransmitter neuron no longer lost
- Fix: retrieve parameters when user order contains non matching words
- Fix: Update Voicerss TTS
- Fix: Usage of double brackets with json sentence
- Fix: Remove acapela TTS
- Feature: Kalliope can be started muted
- Feature: add geolocation signals
- Feature: add Watson TTS
- Feature: Hook. WARNING: This is a breaking change. Settings must be updated
- Feature: add normal, strict and ordered-strict order

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- add core neuron: neurotimer
- add core neuron: mqtt
- add core signal: mqtt
- new feature: community signal now supported
- dict can be used in global variables
- bug fix: python 3 execution with snowboy lib
- new feature: kalliope memory
- add espeak tts to core
- add stt options. manual or dynamic threshold
- Fix: neurotransmitter bracket in answer

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- add keyword_entries attribute to CMU Sphinx
- add simplerate attribute to Pico2wav TTS
- API: convert mp3 file to wav automatically
- add sensitivity attribute to snowboy trigger
- add grammar attribute to CMU Sphinx
- add no_voice flag to api
- add possibility to send parameters when using api with run synapse by name