Package installation depends on version of opencv-python that's no longer distributed

[mpky]

Describe the bug
pip install ocrpy==0.3.10 errors out bc of the opencv-python version required:

ERROR: Could not find a version that satisfies the requirement opencv-python==4.1.2.30 (from ocrpy) (from versions: 3.4.0.14, 3.4.10.37, 3.4.11.39, 3.4.11.41, 3.4.11.43, 3.4.11.45, 3.4.13.47, 3.4.14.51, 3.4.14.53, 3.4.15.55, 3.4.16.57, 3.4.16.59, 3.4.17.61, 3.4.17.63, 3.4.18.65, 4.3.0.38, 4.4.0.40, 4.4.0.42, 4.4.0.44, 4.4.0.46, 4.5.1.48, 4.5.2.52, 4.5.2.54, 4.5.3.56, 4.5.4.58, 4.5.4.60, 4.5.5.62, 4.5.5.64, 4.6.0.66)
ERROR: No matching distribution found for opencv-python==4.1.2.30

To Reproduce
Steps to reproduce the behavior:

1. Initiate new venv
2. pip install ocrpy==0.3.10
3. See error

Expected behavior
Installation to complete successfully

Screenshots
n/a