There are many links in siren code base pointing to the old website

[szydan]

All links with http://sirendb.com should be changed to http://siren.solutions

[szydan]

Also in the documentation there are many relative links like
org/sindice/siren/search/spans/package-summary.html

which are now broken due to packages being renamed to
com/sindicetech/siren/search/spans/package-summary.html