apt-listchanges - 3.19 main

The tool apt-listchanges can compare a new version of a
package with the one currently installed and show what has been
changed, by extracting the relevant entries from the Debian changelog
and NEWS files.
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It can be run on several .deb archives at a time to get a list of all
changes that would be caused by installing or upgrading a group of
packages. When configured as an APT plugin it will do this
automatically during upgrades.