Added new 'package - list long (ll)' command.

Description: the (ll) command runs 'ls -l':

    Score manager - material library - example numbers

        illustration builder - edit (ibe)
        illustration builder - edit & execute (ibex)
        illustration builder - execute (ibx)
        illustration builder - remove (ibrm)
        illustration builder - stub (ibs)

        material definition - boilerplate (mdbp)
        material definition - edit [mde]
        material definition - execute (mdx)
        material definition - execute & edit (mdxe)
        material definition - remove (mdrm)
        material definition - stub (mds)

        output ly - make (lym)

        output material - boilerplate (ombp)
        output material - make (omm)
        output material - remove (omrm)
        output material - view (omv)

        output pdf - make (pdfm)

        stylesheet - edit (sse)
        stylesheet - select (sss)

    > ll

    total 72
    -rw-r--r--  1 trevorbaca  staff   26 Feb 27 11:52 __init__.py
    -rw-r--r--  1 trevorbaca  staff  171 Feb 27 11:55 __init__.pyc
    -rw-r--r--  1 trevorbaca  staff  169 Feb 26 17:59 __metadata__.py
    -rw-r--r--  1 trevorbaca  staff  332 Feb 27 11:44 illustration_builder.py
    -rw-r--r--  1 trevorbaca  staff  626 Feb 27 11:46 illustration_builder.pyc
    -rw-r--r--  1 trevorbaca  staff  147 Feb 27 12:24 material_definition.py
    -rw-r--r--  1 trevorbaca  staff  369 Feb 27 12:25 material_definition.pyc
    -rw-r--r--  1 trevorbaca  staff   62 Feb 25 12:58 output_material.py
    -rw-r--r--  1 trevorbaca  staff  244 Feb 26 17:14 output_material.pyc

    > q