Search engines: nojs, sitemap, schema.org,...
Several Harvesters fixes!!
CORS support and improved proxy
Events and listeners
Custom Metadata UUID
"Just created" flag
XSS security improvements
Focus on 3.2.x (and 3.4.x - develop)
Improve Scalability (Docker, SOLR)
SOLR support/Elastic Search
Anything you want to contribute with :)