Drop support for GraphQL v14

Author: ivome

.circleci/config.yml

@@ -1,4 +1,4 @@
-name: Test And Build
+name: CI
 
 on:
   push:
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        graphql-version: ['~14.6', '~14.7', '~15.0', '~16.0']
+        graphql-version: ['~15.0', '~16.0']
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2

.github/workflows/ci.yaml

@@ -2,7 +2,6 @@
 
 [![npm](https://img.shields.io/npm/dm/graphql-query-complexity)](https://www.npmjs.com/package/graphql-query-complexity)
 [![npm version](https://badge.fury.io/js/graphql-query-complexity.svg)](https://badge.fury.io/js/graphql-query-complexity)
-[![CircleCI](https://circleci.com/gh/slicknode/graphql-query-complexity.svg?style=shield)](https://circleci.com/gh/slicknode/graphql-query-complexity)
 [![Twitter Follow](https://img.shields.io/twitter/follow/slicknode?style=social)](https://twitter.com/slicknode)
 
 This library provides GraphQL query analysis to reject complex queries to your GraphQL server.

README.md

@@ -27,7 +27,7 @@
     "lodash.get": "^4.4.2"
   },
   "peerDependencies": {
-    "graphql": "^14.6.0 || ^15.0.0 || ^16.0.0"
+    "graphql": "^15.0.0 || ^16.0.0"
   },
   "files": [
     "dist",