- rcsv removed (fread makes the better job with default parameters)
- rms function removed (not relevant for ume)
- magrittr added as dependency (might be removed lateron again)
- version changed to 0.2.5

unnecessary packages removed

- minor change in assign_formulas was required to consider cases in which the first an last mass in the library was found in the peaklist.
- Changed variable names to a more readable version...

new functions added

still an unresolved bug with 2 examples

First step:
outlier detection function