* Remove non essential checks (get_closure, __str__, as_dot). These
functions do work even when the DAG has a cycle
* Add shortest_path function.
* Add minimal cycle in exception message when a node introduce a cycle.
With --console-logs=PREFIX option logs will be emited to stdout, without
any color or progress bar and each log record will be prefixed by
"PREFIX: "
TN: S321-029
When two plan lines generates a conflicting action the
exception raised contains a much clearer message including the
references to the two lines causing the conflict and the decision
choice associated with each of them.
TN: S111-036
Setting E3_ENABLE_FEATURE=smtp_ssl outside should not modify test
results. Force the export in conftest.py and mock SMTP_SSL.
Not doing that generates a failure when smtp_ssl is set:
AttributeError: SMTP_SSL instance has no attribute 'local_hostname'
The python process spawned by this test can sometimes return a status
code 0. This is happening mostly on our internal CI server.
There is no interest in debugging that currently so ignore this failure.
