I think mouser didn't update the webpage, but since I downloaded my copy from there, and I have .145, I guess they're the same. So, .145 is the latest version, unless mouser released another .14x version in the interim.
Since the FARR setup package is nothing more than a self-extracting ZIP file, you can download it, open it with your file archiver of choice, extract the FARR executable and check the hash or the modified date of the file to see if it matches your copy. Just if you want to be sure by yourself