Add note about status changes to upgrade guide (#1945)

rack · Aug 6, 2022 · 8f8db66 · 8f8db66
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diff --git a/UPGRADE-GUIDE.md b/UPGRADE-GUIDE.md
@@ -258,3 +258,9 @@ or streaming body.
 
 You must not call `#each` directly on the body and instead you should return a
 new body that calls `#each` on the original body.
+
+### Status needs to be an `Integer`
+
+The response status is now required to be an `Integer` with a value greater or equal to 100.
+
+Previously any object that responded to `#to_i` was allowed, so a response like `["200", {}, ""]` will need to be replaced with `[200, {}, ""]` and so on. This can be done by calling `#to_i` on the status object yourself.