Suggestion: improve breaking of long urls (e.g. in references)

[lsorber]

The hyperref package loads the url package for the \url{} command. However, long latex does not play well with long urls, especially in the references. To improve layout, I suggest adding the line

\PassOptionsToPackage{hyphens}{url}

just before loading the hyperref package, which allows line breaks at hyphens in urls.