ENH: Add filter method to SeriesGroupBy, DataFrameGroupBy
Merge branch 'filter' of https://github.com/danielballan/pandas into danielballan-filter

Conflicts:
	doc/source/v0.11.1.txt
DOC: make compatible with numpy v1.6.1

all does not work so use array_equal

DOC: make compatible with numpy v1.6.1, all does not work so use array_equal
Merge pull request #3786 from cpcloud/read-html-lxml-failed-parse

DOC: make compatible with numpy v1.6.1
CLN depreciate save&load in favour of to_pickle&read_pickle

ENH add set_doc util decorator
WIP very broken