expand change-note to mention classes that have a changed basetype

Author: erik-krogh

javascript/ql/lib/change-notes/2022-04-04-dataflow-models.md

@@ -3,4 +3,55 @@ category: breaking
 ---
 * Many library models have been rewritten to use dataflow nodes instead of the AST.
   The types of some classes have been changed, and these changes may break existing code.
-  Other classes and predicates have been renamed, in these cases the old name is still available as a deprecated feature.
+  Other classes and predicates have been renamed, in these cases the old name is still available as a deprecated feature.
+
+* The basetype of the following list of classes has changed from an expression to a dataflow node, and and thus code using these classes might break. 
+  The fix to these breakages is usually to use `asExpr()` to get an expression from a dataflow node, or to use `.flow()` to get a dataflow node from an expression.  
+   - DOM.qll#WebStorageWrite
+   - CryptoLibraries.qll#CryptographicOperation
+   - Express.qll#Express::RequestBodyAccess
+   - HTTP.qll#HTTP::ResponseBody
+   - HTTP.qll#HTTP::CookieDefinition
+   - HTTP.qll#HTTP::ServerDefinition
+   - HTTP.qll#HTTP::RouteSetup
+   - NoSQL.qll#NoSql::Query
+   - SQL.qll#SQL::SqlString
+   - SQL.qll#SQL::SqlSanitizer
+   - HTTP.qll#ResponseBody
+   - HTTP.qll#CookieDefinition
+   - HTTP.qll#ServerDefinition
+   - HTTP.qll#RouteSetup
+   - HTTP.qll#HTTP::RedirectInvocation
+   - HTTP.qll#RedirectInvocation
+   - Express.qll#Express::RouterDefinition
+   - AngularJSCore.qll#LinkFunction
+   - Connect.qll#Connect::StandardRouteHandler
+   - CryptoLibraries.qll#CryptographicKeyCredentialsExpr
+   - AWS.qll#AWS::Credentials
+   - Azure.qll#Azure::Credentials
+   - Connect.qll#Connect::Credentials
+   - DigitalOcean.qll#DigitalOcean::Credentials
+   - Express.qll#Express::Credentials
+   - NodeJSLib.qll#NodeJSLib::Credentials
+   - PkgCloud.qll#PkgCloud::Credentials
+   - Request.qll#Request::Credentials
+   - ServiceDefinitions.qll#InjectableFunctionServiceRequest
+   - SensitiveActions.qll#SensitiveVariableAccess
+   - SensitiveActions.qll#CleartextPasswordExpr
+   - Connect.qll#Connect::ServerDefinition
+   - Restify.qll#Restify::ServerDefinition
+   - Connect.qll#Connect::RouteSetup
+   - Express.qll#Express::RouteSetup
+   - Fastify.qll#Fastify::RouteSetup
+   - Hapi.qll#Hapi::RouteSetup
+   - Koa.qll#Koa::RouteSetup
+   - Restify.qll#Restify::RouteSetup
+   - NodeJSLib.qll#NodeJSLib::RouteSetup
+   - Express.qll#Express::StandardRouteHandler
+   - Express.qll#Express::SetCookie
+   - Hapi.qll#Hapi::RouteHandler
+   - HTTP.qll#HTTP::Servers::StandardHeaderDefinition
+   - HTTP.qll#Servers::StandardHeaderDefinition
+   - Hapi.qll#Hapi::ServerDefinition
+   - Koa.qll#Koa::AppDefinition
+   - SensitiveActions.qll#SensitiveCall