12 Dec 2010:
* Add the complex zerofinding (Powell's algorithm) routine.
17 Nov 2010:
* Fix some minor(?) memory leaks in the gamma function.
* Add domain check to fp_log; return error if log(0) requested.
* Add routines to get real, imaginary parts as float pts.
* Routine to multiply by complex by float pt.
19 Sept 2010
* Fix divide-by-zero when question mark is passed a zero.
* Fix a bug due to rounding-overflow in the question-mark function.