MapDB wrapped up for use in Dollar.
To get started you'll need this repository:
<repositories>
<repository>
<snapshots>
<enabled>false</enabled>
</snapshots>
<id>bintray-sillelien-maven</id>
<name>bintray</name>
<url>http://dl.bintray.com/sillelien/maven</url>
</repository>
</repositories>
and this dependency
<dependency>
<groupId>com.sillelien</groupId>
<artifactId>dollar-mapdb</artifactId>
<version>0.1.12</version>
</dependency>