splits main function and parser

bump/cli.py

@@ -4,7 +4,7 @@ import typer
 cli = typer.Typer()
 
 @cli.command()
-def main(message = typer.Argument(None, help="The message to be bumped")):
+def default(message = typer.Argument(None, help="The message to be bumped")):
     bp = bump.Bump()
     if message is None:
         bp.show_secret()
@@ -16,5 +16,8 @@ def push():
     bp = bump.Bump()
     bp.version()
 
+def main():
+    typer.run(default)
+
 if __name__ == "__main__":
-    typer.run(main)
+    main()