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docs/changelog.md

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+# Change Log
+
+## v5
+
+**Work In Progress**
+
+- Remove all methods that return `(APIResponse, error)`.
+  - Use the `Request` method instead.
+  - For more information, see [Library Structure][library-structure].
+- Remove all `New*Upload` and `New*Share` methods, replace with `New*`.
+  - Use different [file types][files] to specify if upload or share.
+- Rename `UploadFile` to `UploadFiles`, accept `[]RequestFile` instead of a
+  single fieldname and file.
+- Fix methods returning `APIResponse` and errors to always use pointers.
+- Update user IDs to `int64` because of Bot API changes.
+- Add missing Bot API features.
+
+[library-structure]: ./getting-started/library-structure.md#methods
+[files]: ./getting-started/files.md