message: Update deps
  or, apparently, mostly just add 'github' prefixes
diff: "flux": "2.1.1",
  "focus-trap-react": "^3.0.5",
  "fuse.js": "^2.2.0",
  - "gemini-scrollbar": "matrix-org/gemini-scrollbar#b302279",
  + "gemini-scrollbar": "github:matrix-org/gemini-scrollbar#b302279",
  "gfm.css": "^1.1.1",
  "glob": "^5.0.14",
  - "highlight.js": "^9.0.0",
  + "highlight.js": "^9.13.0",
  "isomorphic-fetch": "^2.2.1",
  "linkifyjs": "^2.1.6",
  "lodash": "^4.13.1",
  "lolex": "2.3.2",
  - "matrix-js-sdk": "0.12.0",
  + "matrix-js-sdk": "matrix-org/matrix-js-sdk#develop",
  "optimist": "^0.6.1",
  "pako": "^1.0.5",
  "prop-types": "^15.5.8",
  "react-addons-css-transition-group": "15.3.2",
  "react-beautiful-dnd": "^4.0.1",
  "react-dom": "^15.6.0",
  - "react-gemini-scrollbar": "matrix-org/react-gemini-scrollbar#5e97aef",
  + "react-gemini-scrollbar": "github:matrix-org/react-gemini-scrollbar#5e97aef",
  "resize-observer-polyfill": "^1.5.0",
  "sanitize-html": "^1.18.4",
  "slate": "^0.41.2",
  "slate-html-serializer": "^0.6.1",
  - "slate-md-serializer": "matrix-org/slate-md-serializer#f7c4ad3",
  + "slate-md-serializer": "github:matrix-org/slate-md-serializer#f7c4ad3",
  "slate-react": "^0.18.10",
  "text-encoding-utf-8": "^1.0.1",
  "url": "^0.11.0",
  - "velocity-vector": "vector-im/velocity#059e3b2",
  + "velocity-vector": "github:vector-im/velocity#059e3b2",
  "whatwg-fetch": "^1.1.1"
  },
  "devDependencies": {
  