version=4
opts="filenamemangle=s%(?:.*?)?v?(\d[\d.]*)%@PACKAGE@-$1.tar.gz%, \
    pagemangle=s%\"tarball_url\":\s*(\".*?\")%<a href=$1>%g, \
    downloadurlmangle=s%api.github.com/repos/(.+?/.+?)/tarball/(.*/v?@ANY_VERSION@)$%github.com/$1/archive/$2.tar.gz%" \
    https://api.github.com/repos/iris-edu/libmseed/releases?per_page=100 \
    (?:.*?/)?v?[-_]?(2[\-+\.:\~\da-zA-Z]*)
