jest retries seem to be masking test failures, like the `auto-export` one (and maybe others). I turned it off for now. The `auto-export` test fails when retries are turned off.
the output of this test failure was a bit unhelpful so I also improved it.
Many tests have anonymous page functions.

* Update `packages/`

* Update examples

* Update tests

* Update bench

* Update top level files

* Fix build

* trigger

* Add export const config support and make withAmp a no-op

* Use babel plugin for PageConfig

* Fix serverless-loader exports

* Add backwards compatibility for withAmp

* Make sure to 404 for AMP bundle in dev mode

* Add test for non-AMP to AMP navigating in dev mode

* Add WithAmp to enable AMP support for
pages instead of .amp.js

* Update handling for exporting AMP

* Fix ampPath in export for / path and
revert isAmp logic to handle right

* Update amphtml test suite

* Add handling for noDirtyAmp during
export and update amp-export test suite

* Update serverless and export-default-map
test suites

* Update require-page tests