Update graphql-tools in / from 2.10.0 to 3.1.0

[dependencies]

Dependencies.io has updated graphql-tools (a npm dependency in /) from "2.10.0" to "3.1.0".

3.1.0

• Loosens the apollo-link dependency PR #765
• Use getDescription from graphql-js package PR #672
• Update IResolvers to use source & context generics and to support all resolver use cases. #896
• WrapQuery's wrapper param can now return a SelectionSet. PR #902 Issue #901
• Add null to return type of directive visitors in the TypeScript definition.
• Make sure mergeSchemas keeps Enum descriptions and deprecation status. PR 898
• Add inheritResolversFromInterfaces option to mergeSchemas PR #812
• Added filtering of empty selection sets in FilterToSchema #827
• Add support for overlapping fragments in ReplaceFieldWithFragment. #894
• delegateToSchema now behaves like info.mergeInfo.delegateToSchema for fragment handling Issue #876 PR #885
• Make schema transforms work with subscriptions, make it so that subscription errors don't disappear when using mergeSchemas #793 #780
• Updates mocking to use casual PR #817