v2.5.0

Added

• (app) Add support for enabling Python profiling via the ABSL_PYTHON_PROFILE_FILE environment variable.
• (flags) Introduce --only_check_flags built-in flag to validate flag definitions without executing main().
• (flagsaver) Add support for async test functions in @flagsaver.flagsaver.
• (testing) Add record_property and get_recorded_properties methods to absltest.TestCase.

Changed

• (flags) Apply defensive copying in save_flag_values to prevent dictionary mutation flakiness.
• (logging) Update type signatures for absl.logging functions to support standard logging arguments (exc_info, stack_info, stacklevel, extra).
• (cleanup) Expand usage of FlagHolder objects in app and absltest.

Fixed

• (flags) Improve formatting and clarity of DuplicateFlagError message.
• (testing) Fix assertion logic in absltest.TestCase.create_file.
• (typechecking) Fix type annotations and compatibility with MyPy and Pyrefly.