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* Fixed #211 ECDC-templates: change URL to for_url()
* Fixed #213 WHO-template: change URL to for_url()
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* Fixed #83  WhoImport.get_new_dates_as_array() SQLalchemy instead of SQL
* Fixed #219 WhoImport.countries() SQLalchemy instead of SQL
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* Fixed #196 OwidImport.get_new_dates_reported_as_array() needs implementation