Rewrote Datafile ion parsing to handle ()+() situations. Added one
unittest. Fixed spelling of savitzkygolay.
Fixed bug on running savitzkygolay on multiple ion TimeSeries.
simple_find_peak almost works.
Speed up object deletion (need to reimplement pretty model update now).
d13C is trimmed to 3 digits. Fixed movingaverage bug.
Seperated peak finding/peak integration code is now usable.