Silent drop of --version support in cowsay

[pe-pe]

Hi, I'm using cowsay in CI/CD pipelines for simple tests of pip install operations (it's simple, nice and small pip package). I've noticed, that is stopped supporting --version argument since this change:
d06699c#diff-d50c47c0e59afa8da1116cdf88561a90b9e484a5fbfdd7b14cf32f6e4ba2dcb5L82

Could you please add it back?