Finite cluster convolution mode

[InfluenceFunctional]

Appropriate cutoffs & exclusions. Atom-wise output. Local features input.

[InfluenceFunctional]

Quite easy to set up for all entries in a single large crystal. Only next step if we don't want to readout the whole thing (e.g., finite carve-out of larger sample) is to only read out samples within a sufficiently small central radius.