Binary protocol channeling over HTTP (#319)

* Implement proto 0.14 (doesn't have the Describe message)

* Implement binary protocol layering over HTTP

Co-authored-by: James Clarke <james@edgedb.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "edgedb",
-  "version": "0.20.3",
+  "version": "0.20.4",
   "description": "The official Node.js client library for EdgeDB",
   "homepage": "https://edgedb.com/docs",
   "author": "EdgeDB <info@edgedb.com>",
@@ -28,6 +28,7 @@
     "@types/node": "14",
     "get-stdin": "^7.0.0",
     "jest": "^26.6.3",
+    "node-fetch": "2.6.7",
     "nodemon": "^2.0.13",
     "prettier": "^2.3.2",
     "proposal-temporal": "^0.7.0",