Private/public rec fields

[emil14]

Neva doesn't have pub (or private) modifiers for rec's field visibility. Instead, if one wants to have private and public fields use more specific type inside implementation and less specific for contract. E.g.

type {
  Internal {
    foo bar
    bar baz
  }
  pub External { foo bar }
}

Internal type (e.g. baz is some local state) is used inside component and External is something component receive or send.