You can install this release via pip install instructlab -
if you've already installed a previous release you can upgrade
it with pip install instructlab --upgrade
We will continue to work toward 0.19.0 but may
continue backporting bug fixes for a possible 0.18.5 if
the CLI Maintainer team deems it necessary
Note that the announcement for 0.18.3 unfortunately
never was sent - please see the release notes there
for the changes made in that release