added semantic version support via gradle plugin

Author: johanneshiry

build.gradle

@@ -11,6 +11,7 @@ plugins {
 	id 'kr.motd.sphinx' version '2.9.0' // documentation generation
 	id 'jacoco' // java code coverage plugin
 	id "org.sonarqube" version "2.8" // sonarqube
+	id 'net.thauvin.erik.gradle.semver' version '1.0.4' // semantic versioning
 }
 
 ext {
@@ -25,7 +26,6 @@ ext {
 
 group = 'com.github.ie3-institute'
 description = 'PowerSystemDataModel'
-version = '1.1-SNAPSHOT'
 sourceCompatibility = javaVersion
 targetCompatibility = javaVersion
 
@@ -40,6 +40,7 @@ apply from: scriptsLocation + 'jacoco.gradle' // jacoco java code coverage
 apply from: scriptsLocation + 'mavenCentralPublish.gradle'
 apply from: scriptsLocation + 'sonarqube.gradle'
 apply from: scriptsLocation + 'vcs.gradle'
+apply from: scriptsLocation + 'semVer.gradle'
 
 repositories {
 	jcenter() //searches in bintray's repository 'jCenter', which contains Maven Central

gradle/scripts/semVer.gradle

@@ -0,0 +1,7 @@
+// tasks for semantic versioning using semver-gradle https://github.com/ethauvin/semver-gradle
+
+task currentVersion {
+	doFirst{
+		println semver.semver
+	}
+}

version.properties

@@ -0,0 +1,8 @@
+#Generated by the Semver Plugin for Gradle
+#Fri Sep 11 12:40:49 CEST 2020
+version.buildmeta=
+version.major=1
+version.minor=0
+version.patch=0
+version.prerelease=
+version.semver=1.0.0