pydata/pandas — pull request #8519 by immerrr (2014-10-09 11:21:56+00:00)
Title: BUG: fix CategoricalBlock pickling

This should fix #8518.

Apparently, `NonConsolidatableMixIn.__init__` was copied from a pre-`BlockPlacement` version of `SparseBlock.__init__` which was incompatible with placement being a slice. The current one is, so I moved it to NonConsolidatableMixIn class almost verbatim.