Lithium + Cocaine

[LunaUrsa]

Fixes #101

This also includes changes from #126 so only review the Lithium + Cocaine info:

"cocaine": {
  "note": "Lithium may inhibit some of the recreational effects of cocaine.",
  "sources": [
    {
      "author": "Flemenbaum, A.",
      "title": "Antagonism of behavioral effects of cocaine by lithium. (1977)",
      "url": "https://doi.org/10.1016/0091-3057(77)90015-6"
    },
    {
      "author": "Cronson, A. J., & Flemenbaum, A.",
      "title": "Antagonism of Cocaine Highs by Lithium. (1981)",
      "url": "https://doi.org/10.1007/978-1-4684-3614-3_132"
    }
  ],
  "status": "Low Risk & Decrease"
},