Support deprecation

[Globegitter]

It seems that deprecation of fields is not supported either in graphene or graphql-core. It seems to be explained here: https://github.com/facebook/graphql/blob/d8a52f1fb70a61ceb13dd49292b74b58d894a074/spec/Section%204%20--%20Introspection.md#deprecation

I would expect to be able to use it as follows:

class User(relay.Node):
    billing_address = graphene.String(
        isDeprecated=True,
        deprecationReason='Selecting your billing address is not supported anymore',
        description='Selected billing address.')

[jhgg]

This is already supported in core. Just pass a deprecation_reason to the underlying GraphQLField.
There is no is_deprecated as a non-null value for deprecation_reason implies is_deprecated for the purpose of schema introspection.

[Globegitter]

Ok will have a look - thanks for the quick response :)

[syrusakbary]

@Globegitter You can now use graphene.String(..., deprecation_reason='Deprecated since 1.0') 😉

[Globegitter]

@syrusakbary Thank you for the quick turnaround :)