update cql4browsers from clinical_quality_language PR (#97)
update cql4browsers from clinical_quality_language PR (#97)

* added contribution rules and pull request template.

* update cql4browsers from clinical_quality_language PR

* update cql4browsers from PR changes

projecttacoma/cql_qdm_patientapi,projecttacoma/cql_qdm_patientapi,projecttacoma/cql_qdm_patientapi