0.2.0 — Mojo 1.0

• Builds on released Mojo 1.0. The pixi channel moved from
  max-nightly to max and the dependency pin from >=1.0.0b3.dev… to
  >=1.0,<2; CI installs mojo==1.0.0 from PyPI instead of the nightly
  index with --prerelease allow. The weekly drift check still runs
  against the latest nightly, so the repo still reports when the language
  moves under it. No source changes were needed.

• README test count corrected: 38 → 59. The 173 CPython urllib.parse
  fixtures still regenerate byte-identical, and 600 mutated inputs ran
  with zero crashes and zero hangs.

• New url.errors module — the position-aware parse-error pattern shared
  across the mojo-* parser suite: line_col maps a byte offset in a
  source buffer to a 1-based (line, byte-column) pair, and parse_error
  builds an Error reading <msg> at line <L>, column <C>: '<snippet>'
  with a whitespace-trimmed, ~30-byte, UTF-8-safe snippet of the
  offending line. Exported as url.line_col / url.parse_error.
  The library itself mirrors urllib.parse's permissive behavior and has
  no raising parse paths today, so no existing messages changed; the
  helpers are ready for future strict/validating APIs. 21 new unit tests
  in test/test_errors.mojo cover every documented edge case.