.github/ISSUE_TEMPLATE.md
<!-- Thank you for submitting an issue!.
Please fill following if applicable, delete otherwise: -->
```
* Operating system: linux / mac / win
* Ruby implementation: Ruby / JRuby / TruffleRuby
* `concurrent-ruby` version: x.y.z
* `concurrent-ruby-ext` installed: yes / no
* `concurrent-ruby-edge` used: yes / no
```