Insecure dependencies

[klandell]

Hello,

I just wanted to point out that this library is using an insecure version of the mime package.

$ nsp check --reporter json

{
	"id": 535,
	"updated_at": "2017-09-27T18:25:14.673Z",
	"created_at": "2017-09-25T19:02:28.152Z",
	"publish_date": "2017-09-27T18:25:14.672Z",
	"overview": "The mime module is vulnerable to regular expression denial of service when a mime lookup is performed on untrusted user input.",
	"recommendation": "Upgrade to version 2.0.3 or greater.",
	"cvss_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
	"cvss_score": 7.5,
	"module": "mime",
	"version": "1.3.6",
	"vulnerable_versions": "< 1.4.1 || > 2.0.0 < 2.0.3",
	"patched_versions": ">= 1.4.1 < 2.0.0 || >= 2.0.3",
	"title": "Regular Expression Denial of Service",
	"path": [
		"atlas@1.0.0",
		"@mapbox/tilelive-mapnik@0.7.0",
		"mime@1.3.6"
	],
	"advisory": "https://nodesecurity.io/advisories/535"
}

Best,
Kyle