Remove DBConnection and make concurrent requests

.github/workflows/main.yml

@@ -107,15 +107,6 @@ jobs:
             cassandra_version: "4.1"
             cassandra_native_protocol: "v4"
 
-          # Oldest supported Elixir/OTP matrix. We support down to Erlang 21, but
-          # rustler_precompiled (which we use for nimble_lz4, which we use for testing)
-          # requires OTP 23+.
-          - otp: "23.3"
-            elixir: "1.11"
-            test_only_cassandra: true
-            cassandra_version: "3"
-            cassandra_native_protocol: "v3"
-
     env:
       CASSANDRA_VERSION: ${{ matrix.server_versions.cassandra }}
       SCYLLA_VERSION: ${{ matrix.server_versions.scylla }}

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## v0.18.0
+
+  * Removed the `Xandra.db_connection_start_option/0` type
+  * Removed the `Xandra.xandra_start_option/0` type
+  * Removed the following options in `Xandra.start_link/1`:
+    * `:idle_interval`
+
 ## v0.17.0
 
   * Move most logs to Telemetry events instead. If you want to keep the same behavior as before, call this in your application's `start/2` callback: