New "dense" stdout callback plugin needs testers

Hi,

I wrote a new stdout callback plugin, named "dense", with the aim to make the output more compact and readable, while valuing screen-estate .

During a playbook-run progress is updated using terminal capabilities. Successful tasks disappear from screen, but if changes or errors occur, they remain on-screen.

Increasing verbosity gives dense change/error details, increasing verbosity even more falls back to the default comprehensive output.

I am looking for more people to test this plugin, you can find the pull-request with installation details at:

     https://github.com/ansible/ansible/pull/14978

And the plugin code is available from:

     https://raw.githubusercontent.com/dagwieers/ansible/dense-callback-plugin/lib/ansible/plugins/callback/dense.py

Feedback welcome !