Incorrect static file encoding 
Serving a static file `./public/yolo.txt` that contains:
```
bla bla őúőúűáé
```
will result in Safari showing:
```
bla bla Å‘ÃºÅ‘ÃºÅ±Ã¡Ã©
```

The file itself is **UTF-8** encoded.

---

The program is simply:
```nim
import jester, htmlgen

routes:
    get "/":
        resp h1("Hello")
```

_**Jester 0.4.3**_