parseMix replaces all numerical edits with a generated dummy boolean variable and returns the resulting categorical edit plus the list of found of numerical edits. These expressions should be handled further by `parseCat` and `parseNum`.
parseMix(e, editname = "", numid = 0, negate = TRUE)list with categorical expression (cat), which is normalized, a numerical expression (nums)
and a negated version of this expression (negNums)
expression to be parsed
starting number for dummy name generation