For every scalar action function there should exist a vector action function

[c-dilks]

#157 adds one vector function

• algos which need full banks can only have vectorized action functions
• since banks have differing numbers of rows, vectorized action functions cannot be trivially generalized from scalar action functions, therefore each must be written manually
• depending num_inspect in HIPO dataframe construction, some variables will only ever be scalar, such as event number; may need mixed scalar/vector action function overloads