Added query params support#1

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crgwbr wants to merge 2 commits intodphiffer:masterfrom

Commits on Apr 25, 2011

added support for post_status query param. Example: get_category_posts/?slug=faq&post_status=future
crgwbr
committed
Added support for category_id, category_slug, tag_id, and tag_slug as query params from any list method (get_tag_posts, get_category_posts, etc.). This allows more fine contorl over posts queries.
crgwbr
committed