ISSUE_TEMPLATE.md

I'm opening this issue because:

supporting information:

• I use sortable version:
• I tested in the following browser (incl. versions):
• Windows, OS X/macOS, or Linux?:

How can the issue be reproduce the problem?

Please add a complete description of how to reproduce the problem.

Thank you for contributing!

• Please make sure your contribution is in line with the contribution guidelines: https://github.com/lukasoppermann/html5sortable/blob/master/CONTRIBUTING.md

• Participation in this open source project is subject to the Code of Conduct: https://github.com/lukasoppermann/html5sortable/blob/master/CODE_OF_CONDUCT.md

Before creating a feature requests, please review the existing feature requests and make sure there isn't one that already describes the feature you are missing: https://github.com/lukasoppermann/html5sortable/issues?q=is%3Aopen+is%3Aissue+label%3Afeature

What's the feature?

What problem is the feature intended to solve?

Is this feature similar to an existing feature in another project?