Prep 0.3.2 - enhancement + small feature release.

Prep 0.3.1 release

Prep 0.3.0 release

Patch number bump for bug fix in package groups feature.

Bump to 0.2.4 for bug fixes and package groups feature

Fixed thread termination conditions and exit handling. Fixed some bad…

…ly-named variables so that they do not interfere with any builtins. Shortened error message when yum or createrepo are not found during installation. Added error log message when premature exit is caught.