Feature Request (?): support for cdf or log_cdf in the mixture family

I am currently working with mixtures and have been trying the "MixtureOfTwo" class.
When I try to compute the cumulative distribution function, however, I am met with the non-implemented error:
"NotImplementedError: Distribution `MixtureOfTwo` does not implement `log_cdf`"

Will `log_cdf` be implemented at some point?

Thank you very much and thank you for developing this fantastic project

Giovanni