docs: changelog, prep for v0.5.0
@@ -6,8 +6,6 @@ BREAKING CHANGES
- Previously zero-prefixed ABA routing numbers would have their leading zero truncated.
- `OriginalTrace` has been changed from `int` to a `string`. (See [#366](https://github.com/moov-io/ach/issues/366))
-## v0.4.1 (Unreleased)
-
ADDITIONS
- Support ADV, TRC, TRX, XCK StandardEntryClassCode (SEC types)
