CI-CD

Fixes #68 -- improve performance of data migration (#69) #36

Job	Run time
test (3.8)	1m 1s
test (3.9)	53s
test (3.10)	1m 3s
test (3.11)	43s
Indicate completion to coveralls.io	6s
Publish on PyPI	0s
	3m 46s

Provide feedback