Add (as experimental feature) summary of m/z and intensities of spectral comparisons in a specified dot product and delta-m/z range

Add (as experimental feature) summary of m/z and intensities of spectral comparisons in a specified dot product and delta-m/z range to be able to explore phenomena such as the side bands seen in this figure:

[figure5.pdf](https://github.com/524D/compareMS2/files/8831322/figure5.pdf)
