v2.1.3

• Fix hardcoded jar version in launcher script — the bin/crystmntui script referenced 2.1.1 instead of the current version; now uses
  version-free jar name (crystmntui-bundled.jar)
• Version-free jar filenames in distribution — lib/ now contains crystmntui.jar and crystmntui-bundled.jar instead of versioned names,
  so the launcher script no longer needs updating between releases
• Versioned top-level directory in distribution zip — zip now extracts into crystmntui-2.1.3/ following standard convention (e.g.
  apache-maven-3.9.6/)
• Remove cli.window from example theme configs — no longer needed
• Rename README to README.md

v2.1.2

Fix window resize freeze in VideoWidget, bump to 2.1.2

Switch paint() to paintComponent() for Swing double-buffering, cache
scaled video frames to avoid redundant rescaling, coalesce resize
repaints with a 150ms timer to prevent EDT starvation on flood of
resize events. Cache BasicStroke(2) as a field.

v2.1.1

Bump version to 2.1.1, rewrite README, update distribution

- Version bump to 2.1.1 in pom.xml, launcher script
- Rewrite README: install instructions, CLI usage, config file
  docs (CLI defaults, UI properties, button overrides), theme
  examples, hardware requirements
- Add examples to distribution zip, remove deleted etc/ fileSet