v1.0.0-rc.1

Removed

• Breaking: the deprecated vendor/RUM enums are removed (deprecated
  with notice in 1.0.0-beta.10): AppLifecycleStates,
  AppLifecycleSemantics, AppStartType, AppInfoSemantics,
  DeviceSemantics, BatterySemantics, NavigationSemantics,
  InteractionType, InteractionSemantics, PerformanceSemantics,
  ErrorSemantics, NetworkSemantics, RumSessionView,
  NavigationAction, and LifecycleState (semantics/rum.dart is
  gone). They are not OpenTelemetry semantic conventions and so do not
  belong in this package; flutterrific_opentelemetry defines its own
  Flutter conventions for what the registry does not yet cover. The API
  package now contains only registry conventions.

Added

• Semantic-conventions versioning policy in VERSIONING.md: within a
  major version, registry regenerations are additive and deprecating
  only; identifier- or wire-affecting registry changes batch into the
  next major; spec-fidelity string corrections are bug fixes with a
  CHANGELOG wire-format table.

Changed

• Breaking: APIObservableResult is now an abstract interface. The
  API-side implementation was unconstructible (private constructor, no
  factory) so nothing could have used it; SDKs implement the interface,
  as dartastic_opentelemetry already does.

Fixed

• Attributes.of no longer throws a TypeError when a map value is an
  untyped list (List<Object> / List<dynamic>). Lists are now
  element-checked like Attributes.fromJson: homogeneous
  string/bool/int/double lists convert, mixed numeric lists promote to
  List<double>, and unsupported element types are warned and ignored
  per the OTel specification.