1.0.0-beta.77

• Exposed createLoadDataState() method as utils
• Introduced internal logging subsystem:
  • Added Widget#log() method
  • Added logLevel option for Widget and App. Supported values: silent, error, warn, info, perf (default) and debug. To disable any logging set logLevel to silent
  • Added logger option (default to console) to override an interface for a logging. Setting to falsy value will disable any logging
• Fixed displaying "Empty list" in view showcase when a view has no examples
• Fixed calling onFinish() callback on Progressbar getting an error
• Fixed an exception on unsubscribing from progressbar state sync on loading data error
• Fixed "uncaught error in promise" on data load failure in preloader
• Removed deprecated option title in expand view config
• Removed warning on definition resolveLink() method in page config