Pack Ann: pack_dnloads.pl script in b_real 0.7

Dear all,

The new version of pack(b_real) contains scripts/pack_dnloads.pl which allows to
(a) plot the current, number of downloads for a number of packs,
(b) track such numbers in time, and
(c) plot the tracked numbers

Dependencies:
pack(lib)
pack(mlu)
pack(mtx)
pack(real)
pack(options)
pack(debug_call)
r_lib(ggplot2)

Static script documentation:
pack_dnloads.pl

Nicos Angelopoulos

http://stoics.org.uk/~nicos