v1.3.1

This is a bug fix release which includes a number of fixes to Bramble's query planner and an issue where Bramble would fall out of sync with services if they went down and back up again.

• always add __typename to abstract types. by @gmac in #91
• fix schema syncing issue. by @lucianjon in #95
• prevent user-defined aliases from breaking federation. by @gmac in #94

Small backwards-compatibility breakage: Bramble now rejects queries where __typename is used to alias a field not named __typename or _bramble_id is used to alias a field not named id.

Full Changelog: v1.3.0...v1.3.1