# Release notes

## 0.6

February 2022

- Removed some code that’s unused since dropping Python 2 support.

- Relax the version constraint for the `flit_core` build requirement.

## 0.5

May 2021

- Easier ways to use `MockCommand` to customise mocked commands, including `python=` to specify extra code to run, `fixed_output()`, and `assert_called()`.

- Command mocking will use `os.defpath` as the initial PATH if the PATH environment variable is not set.