remove redis reference
add first test
Post /workflows sets Location header
GET returns POST data
Whitespace
Generalize roundtrip success test
'{in,out}put connector' are invalid op names
Refactor input/output connector operation handling
Workflows have a single root operation
extract workflow_data validation
remove temporary variables: inputs + environment
extract method: _create_operation
make _create_operation recursive
validate each created operation
nested operations survive round trip
extract create_operation to new module
parallel_by operation round trips
parallel_by nested operations round trip
Whitespace consistency
Test invalid names in nested operations