deb: first implementation

src/changelog.rs

@@ -123,7 +123,7 @@ fn increment_suffix(version: &str, suffix: &str) -> String {
 /*
 * Parse a changelog file first entry header, to obtain (package, version, series)
 */
-fn parse_changelog_header(
+pub fn parse_changelog_header(
     path: &Path,
 ) -> Result<(String, String, String), Box<dyn std::error::Error>> {
     let file = File::open(path)?;