message: Update supported features
diff: @@ -18,7 +18,8 @@ into Rust structures It supports 4-th version of [Cassandra protocol](https://gi
  - [x] tracing information
  - [x] warning information
  - [x] SSL encrypted connection
  -- [ ] load balancing / connection pooling
  +- [ ] load balancing
  +- [x] connection pooling
  ### Frames
  