New json-array feature flag

CHANGELOG.md

@@ -10,7 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### New Features
 
 * Add support for root JSON arrays https://github.com/SeaQL/sea-orm/pull/1898
-    Now the following works!
+    Now the following works (requires the `json-array` / `postgres-array` feature)!
 ```rust
 #[derive(Clone, Debug, PartialEq, Eq, DeriveEntityModel)]
 #[sea_orm(table_name = "json_struct_vec")]

Cargo.toml

@@ -83,6 +83,7 @@ with-bigdecimal = ["bigdecimal", "sea-query/with-bigdecimal", "sea-query-binder?
 with-uuid = ["uuid", "sea-query/with-uuid", "sea-query-binder?/with-uuid", "sqlx?/uuid"]
 with-time = ["time", "sea-query/with-time", "sea-query-binder?/with-time", "sqlx?/time"]
 postgres-array = ["sea-query/postgres-array", "sea-query-binder?/postgres-array", "sea-orm-macros/postgres-array"]
+json-array = ["postgres-array"] # this does not actually enable sqlx-postgres, but only a few traits to support array in sea-query
 sea-orm-internal = []
 sqlx-dep = []
 sqlx-all = ["sqlx-mysql", "sqlx-postgres", "sqlx-sqlite"]