*Rework package installation interface.
* Use progress bar to indicate download progress.
* Handle nested dependencies.
* Handle dependencies needed by more than one package/depend (please test)
* Some minor optimizations. *Add pkg_fetch_recursive().
*Rework package installation interface. * Use progress bar to indicate download progress. * Handle nested dependencies. * Handle dependencies needed by more than one package/depend (please test) * Some minor optimizations.
*Add pkg_fetch_recursive().