Temporarily closing the repository to new pull requests

I've decided to temporarily stop accepting new pull requests.

Recently, there has been a growing number of low-effort, low-quality PRs that don't reflect real hands-on experience. Reviewing them and repeatedly explaining what's missing has become demoralizing and is gradually taking away my enjoyment of maintaining this project.

If you'd still like to contribute, please use this issue tracker instead. You're welcome to share code diffs or link to your fork for discussion.

This is only temporary. We'll figure out a better way.