Options:
--file <file> changelog <file> to parse (defaults to '-').
-l, --label <file> changelog <file> name to use in error messages.
--format <output-format>
set the output format (defaults to 'dpkg').
--all include all changes.
-s, --since <version> include all changes later than <version>.
-v <version> ditto.
-u, --until <version> include all changes earlier than <version>.
-f, --from <version> include all changes equal or later than <version>.
-t, --to <version> include all changes up to or equal than <version>.
-c, --count <number> include <number> entries from the top (or tail if
<number> is lower than 0).
-n <number> ditto.
-o, --offset <number> change starting point for --count, counted from
the top (or tail if <number> is lower than 0).
-?, --help print usage information.
-V, --version print version information.
