Invalid keyword arguments to pydablooms segfaults

[mynameisfiber]

If I initialize a new dabloom filter with the incorrect keyword arguments, I get a segfault:

>>> b = pydablooms.Dablooms(capactiy=1000, error_rate=0.05, filepath='/tmp/bloom.bin')
Segmentation fault: 11

The segfault happens in line 15 of the python module.

[ploxiln]

see also #35 (this will probably be fixed there, eventually)