SwiftMediaMetadata 3.0.2

Fixed

• File-based MXF metadata parsing now uses bounded positional reads instead of
  materializing the complete media file. Essence and unneeded KLV payloads are
  skipped while metadata, MCA labels and file-relative offsets are preserved.
• MXF reads reject invalid bounds, truncated payloads, and file extent changes;
  interrupted reads retry. Same-size concurrent writes are not detected.
• Added parity, bounded-read, sparse-file, malformed-input, and extent-change
  regression coverage. Caller-owned Data continues to use the existing parser.