Update python-intervaltree to version 3.1.0 / rev 3 via SR 990898
https://build.opensuse.org/request/show/990898
by user dirkmueller + RBrownFactory
- update to 3.1.0:
- Dropped support for Python 3.4, added Python 3.8
- Add `__slots__` optimization in Node class, should give performance improvement
- Fixed:
- Restore universal wheels
- Bytes/str type incompatibility in setup.py
- New version of distutils rejects version suffixes of `.postNN`, use `aNN` instead