NoiseFit. Added varargin
TrekHistAnalysis refactoring
TrekLoad. Changed zero trimming at end of trek
Function for density processing
Function for cleaning peaks (by NullLine determination by trek Minus peaks)
New function using FIR
Function for plasma core y movement calculation from FT2 Uy data
Function for determination relative value of rates from different treks (if used different diafragms and so on)
New functions for Noise Determination
New GUI application for Te determination
New merging trek algorithm
ZeroCross Determination zero crossing time point by linear interpolation
Merge branch 'Density'
Merge branch 'TrekSDD_Filter'
Merge branch 'TrekSDD_MergeMK'
DensityCross fixed bug indexing exceed matrix dimensions
DensityFFTPhase. Introduced separate Step and fft window.

Works slow (all Fourier images saved)
FFTPhase. Optimized Speed.
CrossZero works on unfiltered trek, but slow
ZeroCross works fast. Checking for noise is performed only where necessary.