Replaces MongoDB support with PostgreSQL (#151)

- All schemas have been rewritten to a relational model
- All services have been rewritten to accommodate the new data model
- Adds idempotency keys to core endpoints allowing you to retry requests with no additional side effects
- Adds staged jobs to avoid putting jobs in the queue when transactions abort
- Adds atomic transactions to all methods with access to the data layer

Co-authored-by: Oliver Windall Juhl <oliver@mrbltech.com>

packages/babel-preset-medusa-package/package.json

@@ -1,6 +1,6 @@
 {
   "name": "babel-preset-medusa-package",
-  "version": "1.0.1",
+  "version": "1.0.2-alpha.787+0646bd3",
   "author": "Sebastian Rindom <sebastian@mrbltech.com>",
   "repository": {
     "type": "git",
@@ -9,11 +9,13 @@
   },
   "dependencies": {
     "@babel/plugin-proposal-class-properties": "^7.12.1",
+    "@babel/plugin-proposal-decorators": "^7.12.1",
     "@babel/plugin-proposal-optional-chaining": "^7.12.1",
     "@babel/plugin-transform-classes": "^7.12.1",
     "@babel/plugin-transform-instanceof": "^7.12.1",
     "@babel/plugin-transform-runtime": "^7.12.1",
     "@babel/preset-env": "^7.12.7",
+    "babel-plugin-transform-typescript-metadata": "^0.3.1",
     "core-js": "^3.7.0"
   },
   "peerDependencies": {
@@ -23,5 +25,6 @@
   "main": "index.js",
   "engines": {
     "node": ">=10.14.0"
-  }
+  },
+  "gitHead": "0646bd395a6056657cb0aa93c13699c4a9dbbcdd"
 }