[ANN] minitest-focus 1.3.1 Released

minitest-focus version 1.3.1 has been released!

* home: <GitHub - seattlerb/minitest-focus>
* rdoc: <http://docs.seattlerb.org/minitest-focus>

Allows you to focus on a few tests with ease without having to use
command-line arguments. Good for tools like guard that don't have
enough brains to understand test output. Cf. ZenTest's autotest (an
example of a test runner with strong testing logic).

Inspired by Focus On A Single Test · Issue #213 · seattlerb/minitest · GitHub

Changes:

### 1.3.1 / 2021-05-26

* 1 bug fix:

  * Fixed missing require. (ryanseys)