v2.5.1

Added

• (testing) Add assertIsSubclass and assertNotIsSubclass to absltest.TestCase, matching the unittest.TestCase methods added in Python 3.14.
• (flags) Add support for disabling ReloadDetector via the ABSL_RELOAD_DETECTOR environment variable.

Changed

• (testing) Include argument repr in absltest.TestCase.assertDataclassEqual failure message when an argument is not a dataclass instance.

Fixed

• (app) Add __init__ to the app.UsageError type stub.
• (logging) Fix the type signature of logging.skip_log_prefix to preserve the decorated function's return type.
• (testing) Strip ANSI escape sequences from test output before XML escaping in xml_reporter.