Process for updating drupal/core needs to be updated to match upstream

[ProCycleDev]

https://github.com/drupal-composer/drupal-project#updating-drupal-core

composer update drupal/core webflo/drupal-core-require-dev symfony/* --with-dependencies

Since the change to webflo/drupal-core-require-dev it is now nessasary to specify that when updating core or nothing happens https://github.com/webflo/drupal-core-require-dev/issues/3#issuecomment-386119186

Suggest changing this in the documentation

[hansfn]

And just to add the obvious comment: This should be fixed upstream so

composer update drupal/core --with-dependencies

just works. Sorry about the noise :-)