message: Export all exchanges in index
diff: @@ -14,3 +14,8 @@ export { default as query } from './modules/query';
  export { default as mutation } from './modules/mutation';
  export * from './interfaces/index';
  +
  +export * from './modules/cache-exchange';
  +export * from './modules/dedup-exchange';
  +export * from './modules/http-exchange';
  +export * from './modules/subscription-exchange';
  