First release

This is the very first release of the Java client for ProfileDB. The following is included:

• Basic domain model of experiments, configuration, and measurements.
• JSON-based de/serialization of experiments.
• A utility to keep the time of Java applications.

To include ProfileDB in your apps, use

<dependency>
    <groupId>de.hpi.isg</groupId>
    <artifactId>profiledb-store</artifactId>
    <version>0.1.0</version>
</dependency>

for the basic access to the domain model and the serialization layer, and/or

<dependency>
    <groupId>de.hpi.isg</groupId>
    <artifactId>profiledb-instrumentation</artifactId>
    <version>0.1.0</version>
</dependency>

to get access to the time-keeping utility.