There is no new debug features, 1 important fix with behavioral changes (#959), and no functional removals, so I propose a minor version due to the behavioral changes (0.37.0).

List of commits:

8637820 Update changelog for version 0.37.0 (#980)
8bac9b2 Describes Eventlet's Alternatives Into the Migration Guide (#971)
230d2b9 fix migration guide url (#978)
c4f4e69 os.read/write waits until file descriptor is ready. (#975)
06ec828 Upgrade RLocks as last thing we do (#970)
ec6c0ff warns about using multiple readers (#960)
ed743d7 drop header keys with underscores (#959)
64d8516 doc: Repair changelog link (#958)
c22b896 Make the docs more user friendly (#950)

Global diff between 0.36.1 and master (the coming release 0.37.0):

https://github.com/eventlet/eventlet/compare/0.36.1..master