Modify build pipeline to produce sdists as well as wheels #66

Job	Run time
test-path-length	12s
build (ubuntu-20.04, 3.9.9, minimal)	5m 6s
build (ubuntu-20.04, 3.9.9, maximal)	5m 2s
test-api (maximal)	19s
lint-files (maximal)	21s
test-python (ubuntu-20.04, 3.9.9, minimal)	18s
test-yaml (10, 0, minimal)	34s
test-python (ubuntu-20.04, 3.9.9, maximal)	29s
test-yaml (10, 0, maximal)	29s
test-yaml (10, 1, minimal)	29s
test-yaml (10, 1, maximal)	30s
test-yaml (10, 2, minimal)	24s
test-yaml (10, 2, maximal)	25s
test-yaml (10, 3, minimal)	30s
test-yaml (10, 3, maximal)	29s
test-yaml (10, 4, minimal)	24s
test-yaml (10, 4, maximal)	30s
test-yaml (10, 5, minimal)	28s
test-yaml (10, 5, maximal)	30s
test-yaml (10, 6, minimal)	29s
test-yaml (10, 6, maximal)	24s
test-yaml (10, 7, minimal)	25s
test-yaml (10, 7, maximal)	30s
test-yaml (10, 8, minimal)	25s
test-yaml (10, 8, maximal)	31s
test-yaml (10, 9, minimal)	25s
test-yaml (10, 9, maximal)	33s
check-version-and-changelog	15s
check-for-functional-changes	0s
deploy	0s
	21m 26s

Provide feedback