* corrected issue in reinstall that prevented reinstall of package files
* added version command
* updated files() in Package.pm to accept both quiet and verbose options
* added sha() to Snap.pm which will be used for verify function in future
* corrected missing '=' in output for search() in Sources.pm
* removed duplicate file (SRC/snapinstall)
* Separated logic in Snap.pm, Commands.pm, Package.pm, and Sources.pm
* Removed usher creation of directory structure (now in files.tar.gz)
* Files like /etc/passwd now handled by snap-base