v0.1.1 — PyPI page fixes

Packaging fix only — no code changes. The library, the CLI and the weights
are byte-for-byte what 0.1.0 shipped, so there is no reason to upgrade except a
readable project page.

Fixed

• Broken banner and images on the PyPI project page. PyPI renders the
  README without any repository context, so relative paths like
  docs/assets/banner.png resolved against pypi.org and 404'd. Every image
  and in-repo link is now an absolute URL.
• Blank sample players on PyPI. PyPI sanitizes the README against a tag
  allowlist that has no <video> in it, so the three sample clips rendered as
  empty table cells. Each player now carries a fallback .mp3 link inside it —
  GitHub still shows the video players, PyPI shows playable audio links.

Install

pip install --upgrade zerotts
zerotts say "Xin chào" --voice maichi -o out.wav

Full changelog: v0.1.0...v0.1.1