Python 3.9 compatibility

[ma-sadeghi]

I'm trying to install pypardiso on Python 3.9, which depends on mkl-service, but pip complains that:

$ pip install pypardiso==0.3.3
Collecting pypardiso==0.3.3
  Using cached pypardiso-0.3.3-py3-none-any.whl (10 kB)
ERROR: Could not find a version that satisfies the requirement mkl-service (from pypardiso) (from versions: none)
ERROR: No matching distribution found for mkl-service