JavaScript 0.15.0

Add PTY-backed terminal capture with resize and input control, settled frame
deduplication, unrolled text transcripts, asciicast v2 interchange, and animated
SVG recording artifacts.

Patch Changes

• d917186: Preserve the current terminal frame before a later full-screen repaint,
  including when its control sequence is split across PTY output chunks.

Related Pull Request: #176

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