Enhancements

• Added ability to filter cost util reports by periods (#532) @agackovka
• Utilization - Optional roll-ups for concept_ancestor (#544, OHDSI/Atlas#836) @gowthamrao, @pavgra

Fixes

• Fixed heracles heel 'monthly change > 100%' analysis for Netezza (84dfb26) @pavgra
• Switched date formatting to classic format without comma (change reason: to properly work in FF) (eb268ce) @pavgra
• Fixes for Achilles and Heracles reports in Impala (#539) @pavgra
• Calculate only summary for Cost & Util when periods are not passed (9afa2f4) @pavgra
• Fixed retrieval of generated cohort members (62a8fc0) @pavgra
• Fixed related concepts retrieval in Impala (#543) @pavgra
• Removed dummy "No matching concept" option in filters for Cost & Util reports (#556) @pavgra