Release v0.0.5

• Log error instead of failing when profiler.start() raises an exception.
• Makes periodic_actions.ProgressUpdate show total number of steps.
• Makes AsyncWriter non-blocking wrt JAX async computations.
• Adds clu_synopsis.ipynb Colab as initial documentation.
• Restore Checkpoint without providing the state
• Makes PreprocessFn addable.
• Allow n-dimensional arrays (and masks) to be passed to Metrics.Average().