Broken type filter in magic_who_ls

[jdmarch]

%who_ls (hence also %who and %whos) mistakenly interpret any type filter as str.
Broken by http://github.com/ipython/ipython/commit/c870360cc5e0b06054ab92a649f034f47824bf3b
Fixed by http://github.com/jdmarch/ipython/commit/322eec22bf6fc65d34a6ebe7e4c4728c8a2cd4e8
which also removes lots of trailing white space (was that a no-no?)

[jdmarch]

Two newbie questions:

1. Should something trivial like this be posted to the dev list or does opening an issue suffice?
2. The white-space cleanup makes it harder to view the diff on github (unlike with gitk which can ignore whitespace differences). So is it better not to do such cleanup?

[minrk]

This is very stale, but I just noticed it.

This issue has been fixed in 0.11.dev with b6416bc. Judging by comments on the commit, it was fixed previously, but it's definitely working now.