Created by: oserikov
features implemented:
- two strategies of data augmentation (relevant to #1422 (closed), #1395 (closed))
- implemented graph-based policy (todo: migrate onto FSM backend instead of manually implementing)
- added support for bert classifier as intents classifier (todo: #1362 (closed))
- added support for intents catcher as intents classifier
- added memorizing slotfiller and intents classifier components (todo: demo)
- added the ability to feed the bot with pre-calculated intents and slots
- migrated to RASA 2.0 format
- introduced config.yml