Implement logcdf for Truncated and Censored distributions

[ricardoV94]

Description

The CDF for Truncated is just that of the original variable rescaled by the truncation bounds: https://en.wikipedia.org/wiki/Truncated_distribution

The CDF for Censored is also simple.

The two can be tackled in separate PRs

[iykat]

I'd like to help out with this issue.

[ricardoV94]

Sure, let us know if you have any questions.

[shreyas3156]

@iykat I had been working on the logcdf implementation of Truncated distributions and I'm about to create a PR. Sorry for not mentioning it in the comments beforehand. Hope you'd be willing to work on the Censored logcdf implementation :)

[ricardoV94]

What about the Censored ones? Could that still be split?

[shreyas3156]

What about the Censored ones? Could that still be split?

I have not begun working on it. If nobody else has too then it can definitely be taken up.

[ricardoV94]

@iykat Would that work for you?

[iykat]

@iykat Would that work for you?

Yes, I am happy to work on the Censored ones.