feat(commands): add option to change unreleased change title

src/index.ts

@@ -240,9 +240,14 @@ program
   .description("Outputs a markdown formatted changelog")
   .option("--show-hashes", "show first 9 characters of commit hashes")
   .option("--last-only", "display only latest release changes")
+  .option(
+    "--unreleased-as <version>",
+    "show unreleased changes as different version"
+  )
   .action(async (options) => {
     const showHashes = options.showHashes ? true : false;
     const lastOnly = options.lastOnly ? true : false;
+    const unreleased = options.unreleasedAs || "Unreleased";
 
     if ((await simpleGit().tags()).all.length === 0) {
       return console.log(
@@ -261,12 +266,12 @@ program
       const tag =
         semver.sort(
           (await simpleGit().tags([`--contains=${commit.hash}`])).all
-        )[0]! || "Unreleased";
+        )[0]! || unreleased;
 
       const currentCommitStack = parsedCommitStacks.find(
         (commitStack) => commitStack.version === tag
       ) || {
-        version: tag || "Unreleased",
+        version: tag || unreleased,
         breaking: [],
         features: [],
         fixes: [],