Invalid union when intervals share a bound, one open and one closed

[AlexandreDecan]

Unioning AtomicInterval instances (and by extension Interval instances) can lead to an invalid result if the two intervals share a (lower or upper) bound, where one is open and the other one is closed.

>>> I.closed(0, 2) | I.open(0, 2)
I.open(0, 2)

... where the expected result is I.closed(0, 2).

[AlexandreDecan]

This issue is fixed in the master branch, and the fix will be part of 1.9.0 update or, if I cannot manage to release this version soon, will be hotfixed in 1.8.1.

[AlexandreDecan]

Fixed in 1.9.0, now available on PyPI.