ENH: Wrap X12/X13 AUTOMDL. Closes #442.
ENH: Suppport x12 and x13 binary names
TST: Add some smoke tests for x12/x13
DOC/ENH: Add docstrings. Allow DataFrames. Fix transform
REF: X12->X13. Change function names
REF: Rearrange arguments
REF: Return a Bunch object.
REF: select_arima_order -> arima_select_order
DOC: Add note about X12/X13 optional dependency
DOC: Add x13 functions
ENH: Add results object with plot method
DOC: Add X12/X13 to release notes
COMPAT: print statement -> function
ENH: Make best effort to return some x12/x13 path [skip ci]
REF: Rename to X13 warnings/exceptions. Use them.
COMPAT: Python 2.6 string formatting
ENH: Guard against non-string names from pandas
COMPAT: Import print_function
ENH: Allow setting the number of forecasts used.
REF: Don't catch and raise