OpenFilters 1.0 (2007/06/03) VERSION 1.0: First public release of OpenFilters. KNOWN BUGS: - Many functions are susceptible to underflow errors when the layers are thick and the absorbtion important. In the abeles dll, all NaNs and other are transformed to 0s in the Python wrappers but this doesn't really solve the problem which is that k is overestimated. There are still problems in the Python implementation because I can't find a reproducible way to detect NaNs. - Numerical types (ints and floats) are immortal in Python, this will lead to important memory leaks that can prevent the software to work properly when the DLL are not used, particularly for graded-index filters.