* Downgrade missing transformer sourcemap to a warning, not an error, and print the name of the offending plugin if possible ([#746](https://github.com/rollup/rollup/issues/746))
* Warn if same name is re-exported from two modules ([#722](https://github.com/rollup/rollup/issues/722))
## 0.32.4
* Add `ongenerate` and `onwrite` plugin hooks ([#742](https://github.com/rollup/rollup/pull/742))