adding in fsig command (not parsing yet). See example test_fsig.py in bin folder. Also made component variable an optional argument for xaxis and x2axis which will break previous scripts. Did this as when setting the parameter to tune, the Param object contains whatever component owns that parameter so no need to pass it twice. Also stops someone passing a parameter not for the component stated.

Large amount of changes to the param object which now include being able to put and set parameters and commands. Also adding the modulator component.

adding in gauss_param object. Although it doesn't inherit from a complex type it can be used as one in equations as it overrides the various options

- extending SIfloat to work with lists
- adding SIfloat to axis conversion.

Adding in more parsing for finesse commands. Can no specify a chunk of finesse codee. Various other fixes included too. Currently GUI isn't working.

More changes on how it all works. kat.run() now returns a runkat object which contain all the varios information like timestamps, data, headers, version. Gui now has spaces connecting components up. Also added 'Export to SVG' option which is nice, however the SVG renderer mucks up the gradients on the components