Refactored post retrieval so limit is applied per-user and ignores directly requested posts, and to start utilizing async/await.

package.json

@@ -28,6 +28,7 @@
   "license": "ISC",
   "dependencies": {
     "array.prototype.flatten": "^1.2.1",
+    "bluebird": "^3.5.1",
     "cheerio": "^1.0.0-rc.2",
     "config": "^1.30.0",
     "date-fns": "^1.29.0",
@@ -37,6 +38,8 @@
     "mime-types": "^2.1.18",
     "node-exiftool": "^2.3.0",
     "node-fetch": "^2.1.2",
+    "object.omit": "^3.0.0",
+    "object.pick": "^1.3.0",
     "promise.prototype.finally": "^3.1.0",
     "snoowrap": "^1.15.2",
     "url-pattern": "^1.0.3",