Update Fetcher return format from dict-of-lists to matrix (performance optimization).
Database table discovery (gathers metadata like size and columns) for SqlFetcher.
Add selection logic (used to always fetch everything) for SqlFetcher.
Implement translations of pandas.Series.
The rics.utility.perf package for multivariate (data x functions) performance testing.
Fix fetching only required placeholders in SqlFetcher.