ENH: IO World Bank WDI
ENH: wdi->wb
ENH: more informative error msg
ENH: wb country query
split search function
TST: skip world bank unit test #2592
BUG: common.in_interactive_session() returns False after IPython %run magic #2585
BUG: provide for automatic conversion of object -> datetime64[ns] types upon creation (in make_block)
     this obviates the need to convert_objects (mostly)
     in addition, enabled setting of NaT in datetime64[ns] columns via np.nan (on-the-fly-conversion)
TST: fixed up a failing test
BUG/ENH: explicity support Series construction with a datetime64 dtype (and allow np.nan) to be passed
         e.g. Series(np.nan,index=range(5),dtype='M8[ns]')
         bugfix in core/frame for applymap, handle dtype=M8[ns] series explicity (needed to cast datetim64 to Timestamp)
cleaner Timestamp boxing in frame/applymap
DOC: release notes
BUG: fix for com.in_interactive_session #2585
BUG: Index created from FixedOffset tz without a name loses tz awareness #2604
BUG: trivial fix in vb_bench/timeseries.py (failing on argument to vbench)
Merge pull request #2614 from jreback/vbench_fix

BUG: trivial fix in vb_bench/timeseries.py
DOC: remove non-existent parameter from ExcelFile docstring #2613
BUG: nanmin/nanmax fails for empty int dtype #2610
BUG: fix unit test on linux where too many slashes in file://. close #2564
BUG: fix groupby bug/segfault with NAs in hierarchical level. fix MultiIndex tuple with NA issue. close #2616