v4.0rc0

Frigid v4.0rc0 (2025-06-14)

Enhancements

• Add concealment of non-public attributes to standard behaviors of classes and
  objects.
• Documentation: Add comprehensive examples for classes and update all examples
  for the new architecture.

Removals

• Exceptions: Rename exception classes for better consistency.

  • AttributeImmutabilityError is now AttributeImmutability
  • EntryImmutabilityError is now EntryImmutability
  • EntryValidityError is now EntryInvalidity

  This is a breaking change - the old exception names are no longer available.

• Merge dataclasses and objects modules into classes module.
  Remove qaliases module.

• Replace @immutable decorator with @with_standard_behaviors.
  Replace @immutable_dataclass decorator with
  @dataclass_with_standard_behaviors.