Why the line breaks in 1.4.2?

Why the line breaks in 1.4.2?

I notice the minified version of 1.4.2 uses line breaks around column 500-510, where 1.3.2 did not; any reason?
http://code.jquery.com/jquery-1.4.2.min.js
vs.
http://code.jquery.com/jquery-1.3.2.min.js

Only means .1kb in file size, but sure makes scrolling through my global JS easier when jQuery is only one line...

I thought I had read something some time back about "ideal line lengths" or something, but can't seem to find any such references on Google now...

Thanks,
Atg