Add migration note to changelog
improved.
- Fixed a bug where markdown tables in rendered HTML documentation would have
the incorrect background colour on every other row.
-- Tuples now have a new, concise syntax variant: `#(x, y, ...)`
+- Tuples now have a new, concise syntax variant: `#(x, y, ...)`. Existing code
+ can be auto-migrated to the new syntax by running `gleam format`.
## v0.14.4 - 2021-03-27
