* Update amphtml and canonical rels, put amp behind
experimental flag again, and update checking for amp query
* Fix typescript error
* Re-add flag to next.config.js
* 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