raw result logging

[ahunt]

Status Quo: only the final fit-factors are logged to CSV.

Status Desiderare: log all raw results (i.e. every single datapoint received from the 8020(A)). This allows users to plot graphs later and/or we can recalculate various metrics after the fact.

Idea and options:

1. Embed raw results in CSV somehow. Making use of this data will be tricky.
2. Save all results to SQLite (CSV will still be kept for final results). Is a fully normalised schema actually the easiest way to do this (even if its confusing at first)?