"apt changelog" is very useful to look at the changelog for a given
package without the need to fire up a Web browser.

A current limitation is that it only takes binary package names, not
source package ones. So if one wants to see the changelog for a given
source package, finding the name of a random binary package generated
from this source (with "apt showsrc") is a required first step.

It would be nice if it could directly parse source package names, maybe
using a syntax like: apt changelog src:name