ApacheBench timesout on prologue hello world
First time trying Prologue, so I give it a quick bench to see how web scale (:laughing:) it is, and I trip up immediately: 

```shell
$ ab localhost:8080/
This is ApacheBench, Version 2.3 <$Revision: 1843412 $>Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking localhost (be patient)...

apr_pollset_poll: The timeout specified has expired (70007)
```
Looking at the output, prologue recieves exactly ONE request:

```sql
DEBUG GET /
DEBUG 200 OK {"content-type": @["text/html; charset=UTF-8"]}
```
and then no more.

Here's the code, unmodified from the docs:
```nim
import prologue

proc hello*(ctx: Context) {.async.} =
  resp "<h1>Hello, Prologue!</h1>"

let settings = newSettings()
var app = newApp(settings = settings)
app.addRoute("/", hello)
app.run()
```

Which I compiled simply as a release binary:
```shell
$ nim c -d:release pl.nim
```

What's up?