New async await API [API BREAKING CHANGE!]

Breaking Changes:

• Use async await API instead of callbacks, all methods which used call back are async now (not BWC)
• Error format has has changed
• Required Node version changed from ">= 6.14.0" to ">= 8.0.0"
• Dependencies change
  -- data: "request" -> "axios"
  -- ingest : "azure-storage"-> "@azure/storage-queue" & "@azure/storage-blob"

Features:

• New async await API

Fixes:

• Return errors as an object instead of string