update migration doc

Laymer · May 9, 2018 · 7c4941f · 7c4941f
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diff --git a/MIGRATION.md b/MIGRATION.md
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 ## Migration from 0.5 to 0.6
 
+* `Path<T>` extractor return `ErrorNotFound` on failure instead of `ErrorBadRequest`
+
 * `ws::Message::Close` now includes optional close reason.
   `ws::CloseCode::Status` and `ws::CloseCode::Empty` have been removed.