docs: Update MIGRATING and CHANGELOG

CHANGELOG.md

@@ -9,7 +9,7 @@ and this project adheres to
 ### Added
 
 - Emit error if contract macro is above entry_points
-- Remove support for `, custom(msg=.. ,query=..)` in entry_points
+- Deprecate support for `, custom(msg=.. ,query=..)` in entry_points
 - Add CustomMsg and CustomQuery to ContractApi
 
 ### Fixed
@@ -19,7 +19,7 @@ and this project adheres to
 ### Other
 
 - *(sylvia-derive)* Document inner types
-- [**breaking**] Remove `InterfaceApi` in favor of `InterfaceMessagesApi` ([#413](https://github.com/CosmWasm/sylvia/pull/413))
+- Deprecate `InterfaceApi` in favor of `InterfaceMessagesApi` ([#413](https://github.com/CosmWasm/sylvia/pull/413))
 - Fix duplicated instantiation error
 - Refactor struct message generation
 - Generic cw1-whitelist example ([#404](https://github.com/CosmWasm/sylvia/pull/404))

MIGRATING.md

@@ -11,7 +11,7 @@ The `, custom(msg=..., query=...)` part is now not supported and can be safely r
 
 ```diff
 -#[entry_points(generics<Empty, Empty>, custom(msg=Empty, query=Empty))]
-+#[entry_points(generics<msg=Empty, query=Empty>)]
++#[entry_points(generics<Empty, Empty>)]
 #[contract]
 #[sv::custom(msg=E, query=Q)]
 impl<E, Q> CounterContract<E, Q>
@@ -24,15 +24,14 @@ where
 
 ### Removed `InterfaceApi` trait
 
-The `InterfaceApi` trait has been removed in favor of the `InterfaceMessagesApi`.
+The `InterfaceApi` trait has been deprecated in favor of the `InterfaceMessagesApi`.
+It will be removed in the `2.0.0` release.
 
 ```diff
 -let _ = <dyn super::sv::Api as sylvia::types::InterfaceApi>::Query::query_something();
 +let _ = <dyn super::MyInterface as super::sv::InterfaceMessagesApi>::Query::query_something();
 ```
 
-Note: the `InterfaceMessagesApi` does not expose Querier type.
-
 ## 1.0.2 -> 1.1.0
 
 ### Generics in `sv::messages` not required