PKG: remove qseq from parse subpackage.
DOC: add changelog mention for qseq
Merge branch 'master' of https://github.com/biocore/scikit-bio into issue-725
DOC: updated IO format support tables to use different structure
DOC: added docs to qseq
Remove old qseq test code
DOC: add filtering explanation to qseq doctest
Address some of @gregcaporaso's comments
Merge pull request #734 from jairideout/issue-725

QSeq docs