chore(babel-plugin-flow-runtime): unbump version, need to use lerna to do this

Author: jedwards1211

packages/babel-plugin-flow-runtime/package.json

@@ -2,7 +2,7 @@
   "name": "babel-plugin-flow-runtime",
   "homepage": "https://codemix.github.io/flow-runtime",
   "repository": "https://github.com/codemix/flow-runtime.git",
-  "version": "0.20.0",
+  "version": "0.19.0",
   "description": "Transforms flow type annotations into flow-runtime types, optionally adds runtime type validation to annotated code.",
   "main": "babel-plugin-flow-runtime.js",
   "scripts": {
@@ -49,7 +49,8 @@
     "@babel/traverse": "^7.0.0",
     "@babel/types": "^7.0.0",
     "camelcase": "^3.0.0",
-    "flow-config-parser": "^0.3.0"
+    "flow-config-parser": "^0.3.0",
+    "lerna": "^3.22.1"
   },
   "eslintConfig": {
     "extends": "./config/eslint.js"