Hi,
have a look at
http://webgen.gettalong.org/documentation/upgrading.html
for general upgrade information.
The pattern:copy:add mechanism is indeed not used anymore and replaced
by an other (I dare say) easier method. You just need to create a meta
info file and tell webgen what paths should be handled with what path
handler.
For example, here is a sample src/metainfo file for your problem:
--- paths
/**/*.pdf:
handler: copy
The keys (i.e. "/**/*.pdf") can either be a simple pattern or an array
of patterns (i.e. "[/**/*.pdf, /**/*.bmp]").
If you need more help, don't hesitate to write again!
Cheers,
Thomas
ps. One thing that got arguably more complex in the 1.0 version is
defining what a menu shows but there are examples at
http://webgen.gettalong.org/documentation/reference/extensions/tag/menu.html
The website now also has an integrated full page websearch that you can
use to search for terms.