Added array casting to Elementwise and Aggregation like operations.
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Merge pull request #83 from pelson/numpy_as_input

Added array casting to Elementwise and Aggregation like operations.
Added mdtol support for biggus.mean()
Removed default val for mdtol from Handlers
tests for mdtol
Merge pull request #86 from esc24/mdtol_for_mean

Mdtol for mean
Add biggus.count()