#12 Using maven includes slf4j-simple

[Gergely Kontra]

If you use flatpack from maven2, you have to type:

<dependency>
<groupId>net.sf.flatpack</groupId>
<artifactId>flatpack</artifactId>
<version>3.1.1</version>
</dependency>

which will depend on slf4j-simple (which is definitely an issue, if your project has another slf4j implementation). slf4j-api should be enough.