2.0.0

• @flow and @action decorators removed. All simple functions
  (except @view'ed) will be considered as actions. All generators will become
  flow's. getters will become views. Use @view for parametrized views.
• field with model type will not be automatically initialized with empty objects
  any more. So this code will throw error in new version:

@model class Base {}

@model class Container {
  @Base base
}

Use default value

@model class Container {
  @Base base = {}
}

or auto: true option instead:

@model({auto: true}) class Base {}

@model class Container {
  @Base base
}

• basic typescript definitions