If you wish to use ProRPGItems as a dependency in your projects, ProRPGItems is available through Maven Central or snapshots through Sonatype.
<repository>
<id>sonatype</id>
<url>https://s01.oss.sonatype.org/content/repositories/snapshots</url>
</repository>
...
<dependency>
<groupId>com.promcteam</groupId>
<artifactId>prorpgitems</artifactId>
<version>1.1.2-R0.1-SNAPSHOT</version>
</dependency>