bartulem/usv-playpen: usv-playpen v0.9.0

v0.9.0 improvements:

• Replace all glob.glob/os.path usage with pathlib.Path across 30 files
• Resolve star imports (time_utils) with explicit imports throughout
• Remove spurious = None defaults from utility function signatures,
  making required args positional
• Rewrite create_naturalistic_usv_playback_wav to sample IUI/ISI from
  sex-specific GMM components (log-space) and sequence length from
  N(13,5) clipped to [3,23]; remove discrete distribution dicts from
  analyses_settings.json
• Fix offset accumulation bug in compute_behavioral_tuning_curves:
  each shuffle offset now applied independently to the original array
• Fix fallback shape mismatch in synchronize_files when n_video != n_audio
• Fix sub_directory.split() → sub_directory.name.split() in modify_files
• Make conf.py robust: wrap urlretrieve and metadata.version in try/except
• Fix CLI.rst Pygments lexer,
• Guard YAML 1.1 date/bool coercion in yaml_utils
• Remove pandas from pyproject.toml