Use Stefan Birkner's lib-parent as parent POM.

This parent POM provides up-to-date versions of plugins and configures
the plugins that are needed for releasing the library at Maven Central.

.gitignore

@@ -1 +1,2 @@
+.flattened-pom.xml
 target

pom.xml

@@ -3,12 +3,11 @@
 	<modelVersion>4.0.0</modelVersion>
 
 	<parent>
-		<groupId>org.sonatype.oss</groupId>
-		<artifactId>oss-parent</artifactId>
-		<version>9</version>
+		<groupId>com.github.stefanbirkner</groupId>
+		<artifactId>lib-parent</artifactId>
+		<version>4</version>
 	</parent>
 
-	<groupId>com.github.stefanbirkner</groupId>
 	<artifactId>system-rules</artifactId>
 	<version>1.8.0-SNAPSHOT</version>
 	<packaging>jar</packaging>
@@ -56,10 +55,6 @@
 		<url>https://github.com/stefanbirkner/system-rules/</url>
 	</scm>
 
-	<properties>
-		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-	</properties>
-
 	<dependencies>
 		<dependency>
 			<groupId>junit</groupId>
@@ -95,74 +90,11 @@
 	<build>
 		<plugins>
 			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.1</version>
-				<configuration>
-					<source>1.5</source>
-					<target>1.5</target>
-				</configuration>
-			</plugin>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
-				<version>2.17</version>
 				<configuration>
 					<forkMode>always</forkMode>
 				</configuration>
 			</plugin>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-gpg-plugin</artifactId>
-				<version>1.5</version>
-				<executions>
-					<execution>
-						<id>sign-artifacts</id>
-						<phase>verify</phase>
-						<goals>
-							<goal>sign</goal>
-						</goals>
-					</execution>
-				</executions>
-			</plugin>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>2.9.1</version>
-				<executions>
-					<execution>
-						<id>attach-javadocs</id>
-						<goals>
-							<goal>jar</goal>
-						</goals>
-					</execution>
-				</executions>
-			</plugin>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-source-plugin</artifactId>
-				<version>2.2.1</version>
-				<executions>
-					<execution>
-						<id>attach-sources</id>
-						<goals>
-							<goal>jar</goal>
-						</goals>
-					</execution>
-				</executions>
-			</plugin>
-			<plugin>
-				<groupId>org.sonatype.plugins</groupId>
-				<artifactId>nexus-staging-maven-plugin</artifactId>
-				<version>1.6.2</version>
-				<extensions>true</extensions>
-				<configuration>
-					<nexusUrl>https://oss.sonatype.org/</nexusUrl>
-					<serverId>sonatype-nexus-staging</serverId>
-					<autoReleaseAfterClose>true</autoReleaseAfterClose>
-				</configuration>
-			</plugin>
 		</plugins>
 	</build>
-
 </project>