Simplified SQL using BuildQuery.
More robust code when comparing JSON data.
When two JSON has different keys, so the different keys for debugging.
When probs comparing JSONs, always show the two files compared.
Implemented and tested all metrics for SCR.
evol and agg data is generated completly with Metrics classes approach now.
Added new reviewers metric to filters metrics.
Added implementation and tested for reviews waiting for submitter and reviewer.
Added support for new metrics in SCR.
Cleaned code moved to Metrics classes.
Merge branch 'master' of https://github.com/VizGrimoire/GrimoireLib