v1.7 October 2009
 * Fixed inverse transorm to work in realFFT and complexFFT

v1.5 April 2005
 * Alteres complex fftdata to use fftw_malloc and fftw_free.

v1.4 : Fix merrory allocation error in real2DFFT.cc variable realXSum

v1.3 : Change from fftw2 to fftw3 ... should be more efficient
	This is 100% backwards compatable with the API for v1.2
	Re-documented (*.H -> html) ... API docs should be alot better
	Ensured all examples for realFFT, complexFFT and real2DFFT work

v1.2 : complex fft switchData function implemented

v1.1 : Change-log begun
	separated the realFFT and realFFTData classes
	improved the documentation
	fixed the realFFTExample example file
	other major adjustments not listed
