This package moved between Ubuntu Main and Universe a few times, therefore care
had to be taken regarding its build dependencies. Ubuntu used (and still uses)
yui-compressor instead of node-uglifyjs to minify the raphael.js file because
the former was in Main back then, as was raphael itself.

Nowadays everything is in Universe, so in the next cycle this bit of delta
Ubuntu has with Debian can be dropped.

The other delta that Ubuntu has with Debian is that we ship the non-minified
version of raphael.js, which is what most javascript packages do. A bug was
filed about that in Debian: https://bugs.debian.org/874270

For some amount of time, Ubuntu shipped this package with the minified file
named like raphael-min.js instead of raphael.min.js. This has been fixed, but
a symlink pointing to the old incorrect name was kept just in case someone
used it.
