Restructure / implement more functionality

[mariogiov]

Hi Nils!

I was looking for a good wrapper for downloading files from BaseSpace and I found your scripts! Great initiative. I think a good set of wrappers for additional functionality would be great. I rewrote this script pretty heavily (mostly just to be a bit more Pythonic) while keeping the general flow you had. I think the result is quite tidy but there are still some more features I'd like to add and some more restructuring as well. If you'd rather skip this PR that's fine but I think collaborations are always a good thing (and I love the ascii art!).

Best,
Mario

[nh13]

what if we want a specific sample within a project?

[mariogiov]

Agreed, I think the more restrictive use-case as you describe it is the better one.

[nh13]

Unfortunately, this breaks backwards compatibility with a common use case. If I have a project that is shared with me, it is not listed when I simply specify the project id using the -p option. It works if I update the line:

    basespace_projects = myAPI.getProjectByUser()

to:

    from BaseSpacePy.model.QueryParameters import QueryParameters as qp
    basespace_projects = myAPI.getProjectByUser(qp({'Limit' : 1024}))

Perhaps there is some default limit? Anyhow, looks good so far but the above needs to be fixed and I can continue reviewing.