v0.1.0

Initial release.

• Voice activity detection (dual-metric: energy + spectral flux)
• Multi-format audio decoding (WAV/MP3/FLAC/OGG/M4A/Opus → 16kHz mono PCM)
• Preprocessing: DC removal, high-pass filter, noise reduction, normalization
• Speech-aligned chunking with configurable duration and overlap
• Audio quality assessment metrics
• 216 tests

cargo add speech-prep