.tox.ini: turn on python3 unit testing
.tox.ini: turn on python3 unit testing

dleehr/common-workflow-language,StarvingMarvin/common-workflow-language,StarvingMarvin/common-workflow-language,mr-c/common-workflow-language,mr-c/common-workflow-language,common-workflow-language/schema_salad,StarvingMarvin/common-workflow-language,hmenager/common-workflow-language,dleehr/common-workflow-language,hmenager/common-workflow-language,mr-c/common-workflow-language,common-workflow-language/schema_salad,common-workflow-language/schema_salad,dleehr/common-workflow-language,manu-chroma/schema_salad,common-workflow-language/schema_salad,common-workflow-language/common-workflow-language,common-workflow-language/common-workflow-language,common-workflow-language/schema_salad,curoverse/common-workflow-language,common-workflow-language/schema_salad,hmenager/common-workflow-language,curoverse/common-workflow-language,common-workflow-language/common-workflow-language,hmenager/common-workflow-language,manu-chroma/schema_salad,common-workflow-language/schema_salad,StarvingMarvin/common-workflow-language,common-workflow-language/common-workflow-language,dleehr/common-workflow-language