FIX: no post version if main version changed

setup.py

@@ -51,6 +51,8 @@ if util_version != latest_previous_util_version and str(largest_ver) == latest_p
         post_version = 1
     else:
         post_version = int(post_version) + 1
+if str(largest_ver) != latest_previous_api_version:
+    post_version = None
 
 setup(
     version=f'{str(largest_ver)}{".post" + str(post_version) if post_version is not None else ""}{".dev1" if os.environ.get("CI_COMMIT_BRANCH", "local") == "devel" else ""}+{util_version}',