BUG: reindex with single block manager now correctly fills with a method

BUG: fixed pickle I think

BUG: fixed set in internals for sparse

fixed boolean indexing iin series I thnk

BUG: fixed printing and inclusion of sparse series in DataFrame (now keeps its type),
     converted to dense for printing
CLN: took out SeriesIndex, now uses regular indexing properties
BUG: fixed copy (was using series method, bad)
     block filling for datetimes now ok (was filling with NaT, not iNaT)
     NaN in boolean ops now correctly handled (was not working for Datetimes)

BUG: fixed set_item in SparseFrame if only a scalar is passed (needed index)

BUG: sparse join fixed, did I break something in merge?

BUG: consolidated block slicing under _slice