[spring-server] update to use Spring Boot RC1 (ExpediaGroup#421)

Add DataLoader example. (ExpediaGroup#396)

spring-server: include path in SimpleKotlinGraphQLError default error…

… message (ExpediaGroup#392)

Fix Apollo subscription message handling (ExpediaGroup#371)

* Fix Apollo subscription message handling

* Implement graphql-ws spec

Here is the spec https://github.com/apollographql/subscriptions-transport-ws/blob/master/PROTOCOL.md

* update spring config metadata

* Remove unused config

The config value for the packages is overriden in the hooks so we can remove it

Update update-version.sh (ExpediaGroup#354)

Delete build.yml (ExpediaGroup#352)

Remove the Github CI until we are ready to transition

examples README.md (ExpediaGroup#349)

Copyright header (ExpediaGroup#332)

* Add copyright header

* Update copyright name

feature: batch support for resolving federation requests (ExpediaGrou…

…p#306)

* feature: batch support for resolving federation requests

NOTE: This is a non-backwards compatible change as FederatedTypeResolver resolve signature is changed to process list of representations at once. This allows resolver to either instantiate entities one by one or use some batch logic.

Update _entities query resolver logic to resolve federation requests in batch mode. Specified federated object representations are grouped by the underlying typename and asynchronously resolved in batches. Batch results are then merged into a single list that preserves the original order of entities. If entity cannot be resolved, NULL will be returned instead. Any exceptions thrown while attempting to resolve the federated types will be returned together with partially resolved data.

* additional test for invalid result size

feat: exclude the example app from code coverage (ExpediaGroup#297)

Instead of deleting the tests, we can just exclude this project from the reports