chore(package): update babel-plugin-transform-class-properties to version 6.24.1
chore(package): update babel-plugin-transform-class-properties to version 6.24.1

https://greenkeeper.io/

jamiehodge/express-graphql,graphql/express-graphql,jamiehodge/express-graphql,graphql/express-graphql,graphql/express-graphql,jamiehodge/express-graphql