* updated changelog for pending 1.0 release
* updated changelog for pending 1.0 release

jpo/healthcareai-py,mxlei01/healthcareai-py,mxlei01/healthcareai-py,HealthCatalyst/healthcareai-py,jpo/healthcareai-py,HealthCatalystSLC/healthcareai-py,HealthCatalyst/healthcareai-py,HealthCatalystSLC/healthcareai-py