message: Add createRequest to updateQuery for parsing strings
diff: import invariant from 'invariant';
  import { DocumentNode } from 'graphql';
  +import { createRequest } from 'urql';
  import * as Pessimism from 'pessimism';
  import {
  @@ -252,12 +253,13 @@ export class Store {
  }
  updateQuery(
  - ctx: { query: DocumentNode; variables?: Variables },
  + input: { query: string | DocumentNode; variables?: Variables },
  updater: (data: Data | null) => null | Data
  ): void {
  - const output = updater(read(this, ctx).data);
  + const request = createRequest(input.query, input.variables);
  + const output = updater(read(this, request).data);
  if (output !== null) {
  - startWrite(this, ctx, output);
  + startWrite(this, request, output);
  }
  }
  