Release version 1.0.0

[hcho3]

• [x] Create a new branch release_1.0 using the latest commit of main: git switch -c release_1.0
• [x] Push the new branch release_1.0 to dmlc/tl2cgen: git push origin release_1.0
• [x] Run python dev/change_version.py --major 1 --minor 0 --patch 0 --is-dev 0 to change the version fields in the codebase. Commit the changes to the local branch release_1.0: git commit -m "Release 1.0.0"
• [x] Publish the changes to a fork and create a pull request. (git push fork release_1.0) The pull request should target the new branch dmlc/release_1.0. Done: https://github.com/dmlc/tl2cgen/pull/27
• [x] Ensure that all tests in the CI (Continuous Integration) pipeline passes. Ping @hcho3 if any issue arises.
• [x] Once all tests pass, merge the pull request. Note: This will require an admin access to this repo. Ping @hcho3 to obtain access.
• [x] Check that the CI pipeline runs successfully with the release_1.0 branch. The CI pipeline will upload artifacts to an S3 bucket.
• [x] Create a new tag 1.0.0 to the branch release_1.0: git tag 1.0.0. Publish the tag with git push origin 1.0.0.
• [x] Create a new release on GitHub using the tag 1.0.0.
• [x] Run the Python script dev/prepare-pypi-release.py to download the artifacts from the S3 bucket.
• [x] Upload the artifacts to PyPI. Follow instructions given by dev/prepare-pypi-release.py. Note: You will need to inquire @hcho3 for access to PyPI.
• [x] Switch back to the main branch and create a new branch: git checkout main && git switch -c bump_version
• [x] Submit a pull request to TL2cgen to bump the development version to 1.1.0-dev, by running python dev/change_version.py --major 1 --minor 1 --patch 0 --is-dev 1
• [x] Submit a pull request to conda-forge/tl2cgen-feedstock to publish the 1.0.0 release to Conda-Forge. Ping @hcho3 for help.

[hcho3]

Thank you for helping with the 1.0.0 release!