pandera 0.1.1

Improve error reporting, add coerce option

on Python PyPI

This release adds two new features to pandera.

Improved error reporting

Now failure cases in column checks are displayed in a much more compact format,
where the failure cases, the index of the dataframe where those failures occur, and the
count of failure cases are shown to the user, e.g.

# failure cases:
#              index  count
# failure_case
# foo1           [0]      1
# foo2           [1]      1
# foo3           [2]      1

Coerce option in DataFrameSchema and Column

Now the user can coerce the dataframe when calling schema.validate so that
the columns are cast into the expected data-type before performing Checks.