Fjern v0.2.1

Fjern v0.2.1

This release improves RDP and VNC responsiveness, especially during scrolling
and scaled/fullscreen sessions, and prepares the binary package for AUR submission.

• RDP: independent bounded writes, row-aware snapshots, bitmap burst coalescing
  and replacement of stale queued images.
• H.264/AVC420: convert changed regions directly into persistent surfaces and
  avoid extra GFX payload copies while preserving reference-frame decoding.
• VNC: faster tile processing, ZRLE decoding, CopyRect and damage-aware scaling.
• Wayland: mapped frame submission and scroll accumulation that preserves
  batched movement and the final touchpad delta.
• Packaging: fjern-bin provides the unchanged fjern command. Archives include
  third-party license notices and Rust standard-library attribution.

Download the Linux x86_64 archive and its .sha256 file below. Verify with:

sha256sum --check fjern-v0.2.1-x86_64-linux.tar.gz.sha256

For Arch installation, use the updated recipe on the repository's main branch
in packaging/arch. It is not yet submitted to AUR or an official Arch repository.
The release is dynamically linked; runtime dependencies are listed in the recipe.

Fjern remains early-development software. See docs/platform-validation.md
and docs/h264.md for tested configurations and remaining limitations.