Can't resolve type of eot file

Hello,

During my development, I encountered a problem on mime type resolution for the extension **eot**. You can reproduce with these code.

```js
const { lookup } = require("mrmime");

console.log(lookup("fonts/glyphicons-halflings-regular.eot")); // print undefined
console.log(lookup("fonts/glyphicons-halflings-regular.ttf")); // print font/ttf
```

Just to be sure I check the mime-db repository to be sure that the problem wasn't there, but apparently there is a reference to this mime type [here](https://github.com/jshttp/mime-db/blob/a76e5a824c228e2e58363c9404e42a54ee1d142f/db.json#L3951)
.

That is probably a misuage or misunderstanding of my own. Thank you for you work and reading.

Start by reproducing the two lookup calls from the issue and inspect how mrmime maps extensions, comparing the eot entry with the referenced mime-db record. Done means lookup("fonts/glyphicons-halflings-regular.eot") returns the expected MIME type, with a regression check covering the case.

Written by the indexing model from the issue text.