Release v0.3.5 - VpxPacket now exposes pts() and duration(), echoed back from each encode() call, so callers can correlate encoded packets with input frames and compute mux timing - Both values are read from the native vpx_codec_cx_pkt_t.data.frame struct; no overhead beyond what libvpx already provides - New VpxEncoderConfig fields: BitDepth enum (8/10/12-bit), inputBitDepth, resizeAllowed, and minKeyframeDistance — all wired to the corresponding libvpx FFI setters - New round-trip tests for PTS/duration in Vp8EncoderTest and Vp9EncoderTest