add changeset

.changeset/fresh-queens-watch.md

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+---
+'@graphql-tools/batch-delegate': major
+'@graphql-tools/batch-execute': major
+'@graphql-tools/delegate': major
+'@graphql-tools/links': major
+'@graphql-tools/url-loader': major
+'@graphql-tools/stitch': major
+'@graphql-tools/utils': major
+'@graphql-tools/wrap': major
+---
+
+refactor: ExecutionParams type replaced by Request type
+
+rootValue property is now a part of the Request type.
+
+When delegating with delegateToSchema, rootValue can be set multiple ways:
+
+- when using a custom executor, the custom executor can utilize a rootValue in whichever custom way it specifies.
+- when using the default executor (execute/subscribe from graphql-js):
+  -- rootValue can be passed to delegateToSchema via a named option
+  -- rootValue can be included within a subschemaConfig
+  -- otherwise, rootValue is inferred from the originating schema
+
+When using wrapSchema/stitchSchemas, a subschemaConfig can specify the createProxyingResolver function which can pass whatever rootValue it wants to delegateToSchema as above.