Release 0.9.0

[lord63]

• migrate branch name from master to main. Thanks @jackblk
• drop 2.x support, add 3.10+ support. Thanks @iamgodot
• migrate travis to github aciton
• migrate to uv
• readme clean. Thanks @a1346054

[Copilot]

Pull request overview

Release prep for v0.9.0, modernizing the project by moving to a pyproject.toml/uv-based workflow and updating CI accordingly.

Changes:

• Migrate packaging to pyproject.toml (hatchling) and add uv.lock; remove legacy setup.py, tox.ini, and dev requirements tooling.
• Update CI from Travis to GitHub Actions and test against Python 3.10–3.13.
• Drop Python 2-era compatibility shims (__future__, io.open, encoding headers) and bump version to 0.9.0.

Reviewed changes

Copilot reviewed 24 out of 25 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
uv.lock	Adds uv lockfile pinning dependencies and Python >=3.10 requirement.
tox.ini	Removes tox configuration for older Python envs.
tldr/parser.py	Switches file reading from io.open to built-in open (Py3-only cleanup).
tldr/config.py	Switches config reading from io.open to built-in open (Py3-only cleanup).
tldr/cli.py	Switches index reading from io.open to built-in open (Py3-only cleanup).
tldr/init.py	Bumps package __version__ to 0.9.0.
tests/test_update.py	Removes legacy encoding header.
tests/test_reindex.py	Uses super() (Py3-only cleanup) and removes legacy imports/headers.
tests/test_parse.py	Updates mocks to patch builtins.open instead of io.open.
tests/test_locate.py	Removes legacy __future__ import and encoding header.
tests/test_list.py	Removes legacy __future__ import and encoding header.
tests/test_init.py	Switches from io.open to open and removes legacy imports/headers.
tests/test_find.py	Removes legacy __future__ import and encoding header.
tests/test_config.py	Updates mocks to patch builtins.open instead of io.open.
tests/basic.py	Removes legacy encoding header.
setup.py	Removes legacy setuptools packaging entrypoint.
setup.cfg	Removes legacy wheel config.
pyproject.toml	Introduces PEP 621 metadata + hatchling build + pytest config + dev dependency group.
dev-requirements.txt	Removes legacy dev requirements list (replaced by pyproject/uv).
README.rst	Cleans up badges/links to remove Travis/coverage references.
Makefile	Removes legacy test/build/upload commands.
MANIFEST.in	Removes legacy manifest entries.
ChangeLog.md	Adds v0.9.0 changelog entry.
.travis.yml	Removes Travis CI configuration.
.github/workflows/ci.yml	Adds GitHub Actions CI using uv across Python 3.10–3.13.

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