Bump version and update changelog

CHANGELOG.md

@@ -4,6 +4,20 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.2.0] - 2021-03-08
+
+### Changed
+
+  - Now includes the latest Let’s Encrypt certificate authority root certificate for the staging environment. (This is automatically injected into your Node.js environment when running the server in staging mode and is used during testing.)
+
+### Fixed
+
+  - No longer crashes when checking for certificate renewal. (#34)
+
+### Improved
+
+  - npm package size is now 199.7kb (down from 345kb previously).
+
 ## [2.0.6] - 2021-02-16
 
 ### Fixed

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@small-tech/auto-encrypt",
-  "version": "2.0.6",
+  "version": "2.2.0",
   "description": "Adds automatic provisioning and renewal of Let’s Encrypt TLS certificates with OCSP Stapling to Node.js https servers (including Express.js, etc.)",
   "keywords": [
     "let's encrypt",