[CLEANUP] now unused RExecutor class removed + cleanup
[FIX] fixed issue with return values of pm explorer
[FIX] fixed xcms feature detectors, where broken after introducing pyper
[FEATURE] better support for pandas -> Table conversion
[FEAURE] improved Table.addRow/.setRow
[FEATURE] remove ranges in peak maps
[FIX] fixed description of isIn expression for tuple arguments
[FIX] pm explorer: fixed exception for spectra with empty peaks