Added PropertyIsBetween operator test.

[keshavnangare]

This pull request is not finalized yet (in progress) and can be used as a basis for future work.

Fixes #30

[ghobona]

Just a note that I had to add the following to the Maven pom file when testing on a Java 11 VM. The dependency is not needed for Java 8 deployment.

<dependency>
    <groupId>javax.xml.bind</groupId>
    <artifactId>jaxb-api</artifactId>
    <version>2.3.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.xml.soap/javax.xml.soap-api -->
<dependency>
    <groupId>javax.xml.soap</groupId>
    <artifactId>javax.xml.soap-api</artifactId>
    <version>1.4.0</version>
</dependency>