- Fixed redundant __user__ checks in _get_token, _get_repo, _get_branch, _get_org - Fixed merge_pull_request: proper conflict detection (409), merged status check, and empty response handling - Fixed update_file: proper 404 handling before raise_for_status - Fixed delete_file: proper 404 handling before raise_for_status - Updated version to 1.4.1 with changelog Refs: bug hunt fix