Summary:
Draft changelog:

* **[Feature]** Add option to use the Hermes parser in the transformer. (https://github.com/facebook/metro/commit/6dae16318c369f2b4b1be7d9649506e00ffffa72)
* **[Feature]** Update the list of default React Native lazy imports to match the [removal of Picker](https://github.com/facebook/react-native/commit/ad0ccac0d6471fa5428bf137c3aa0646883e8446), which was already deprecated. (https://github.com/facebook/metro/commit/7dcb20dffe4ddad2a5f0eaba333591c24ce533b3)
* **[Feature]** Make the input transform options (e.g. `platform`) available to `experimentalSerializerHook` and `customSerializer`. (https://github.com/facebook/metro/pull/679)
* **[Fix]** Avoid triggering Babel scope caching bugs. (https://github.com/facebook/metro/commit/4fea2bd5a72c7c3e3030adc07a0dd97322e63c5a, https://github.com/facebook/metro/commit/1370b7a609d6361b3e057288b017e2077c90ab45)
* **[Fix]** Fix Hermes debugger proxy for IPv6. (https://github.com/facebook/metro/pull/662)
* **[Types]** Remove documentation and types for the `postMinifyProcess` option which has been broken since Metro v0.33.0. (https://github.com/facebook/metro/commit/5d778de73a7952277770e31b713bc17f64e86379)
* **[Experimental]** Various unstable additions to the transformer config. *These are not covered by semver and can change at any time.* (https://github.com/facebook/metro/commit/648224146e58bcc5e4a0a072daff34b0c42cafa6, https://github.com/facebook/metro/commit/339027474dfced7f40469ea3f76caf5b8c6757a8, https://github.com/facebook/metro/commit/5b913fa0cd30ce5b90e2b1f6318454fbdd170708, https://github.com/facebook/metro/pull/677)

Reviewed By: GijsWeterings

Differential Revision: D29514800

fbshipit-source-id: 89bd4b8a53a701ceaf18867e8e9379fd3401bbbe