Check implementation of various distributions

[ewu63]

Making sure all distributions are defined in a consistent manner. Check with OAS to see how the linear/cosine distribution is done there, and whether we want to use that implementation.

[stale]

Is this still relevant? If so, what is blocking it? Is there anything you can do to help move it forward?

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.