1. Tons of infrastructure improvements: upgraded to Ubuntu 18.04 for all servers (from 16.04), upgraded to Elasticsearch 7.1 (from 6.5), upgraded to Postgres 11 (from 9.5)... In particular, upgrading Postgres was the most time consuming task, which took me a few days to complete, as I had to make sure there was no downtime for both the website & the api.
2. More follow-up developments for Listen API v2: standardized API documentation with OpenAPI, added RunKit integration to the DOCS page, bigger thumbnail images for podcasts...
3. Some internal tools to fight spammers. Yes, there are a lot of bad people on the internet trying to create fake accounts on popular websites, e.g., for black hat SEO purpose.