nomnom@1.6.2: Package no longer supported

FYI I get this on a fresh install:

```
Toms-MBP-2:sketch-to-canvas tommedema$ yarn add css-property-parser
yarn add v1.9.4
[1/4] 🔍  Resolving packages...
warning css-property-parser > nearley > nomnom@1.6.2: Package no longer supported. Contact support@npmjs.com for more info.
```