1. Fixes to improve download speed of the block snapshot files - previous release had a limitation meaning that most users saw download speed limited to ~2Mb/s.
2. Exposing UDP and TPC ports 42069 (bitTorrent) in docker image.
3. Renamed syncmode fast to syncmode full in command line arguments, to avoid confusion.
4. Added “ethstats” service.
5. First version of “Observer” - p2p network crawler, which is a pre-cursor for an open source node explorer.
6. Add ENR seq field according to EIP-868.
7. RPC method admin_peers to collect information about connected peers, including when there are multiple p2p sentries.
8. Clean up of fork choice related tables - they are not used anymore.
9. Fixes to pruning in the presence of block snapshost files.
10. Fixes to header downloader getting stuck.