BinneR doesn't correctly detect the injection scans range

[elliotfontaine]

Issue:

If there is overpressure at the start or the end of a spectrometer run, binneR scan filtering might not work properly because the TIC maximum won't be the sample.

Solution:

Add a trim_spectrum task after mzml conversion, and expose to the user head and tail parameters, which are the number of scans to cut at the start and end of the spectrum.

[elliotfontaine]

pyOpenMS could be used for the trimming task.