Closes 57 (#58)

* Closes 57

.github/workflows/release.yml

@@ -0,0 +1,42 @@
+# This is a basic workflow to help you get started with Actions
+
+name: release
+
+# Controls when the action will run. 
+on:
+  release:
+    types: [published]
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-18.04
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 15
+        uses: actions/setup-java@v1
+        with:
+          java-version: 15
+
+      - name: Cache Gradle packages
+        uses: actions/cache@v1
+        with:
+          path: ~/.gradle/caches
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}
+          restore-keys: ${{ runner.os }}-gradle
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Build with Gradle
+        run: ./gradlew clean build
+
+      - name: Publish to sonartype
+        run: ./gradlew publish
+
+      - name: Release to central
+        run: ./gradlew closeAndReleaseRepository
+

build.gradle.kts

@@ -23,7 +23,7 @@
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 import org.gradle.api.tasks.testing.logging.TestLogEvent
 
-version = "0.0.4"
+version = "0.0.5"
 
 plugins {
     kotlin("jvm") version "1.5.0"
@@ -33,13 +33,14 @@ plugins {
     maven
     `maven-publish`
     signing
+    id("io.codearte.nexus-staging") version "0.30.0"
 }
 
 java {
     withJavadocJar()
     withSourcesJar()
-    sourceCompatibility = JavaVersion.VERSION_15
-    targetCompatibility = JavaVersion.VERSION_15
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
 }
 
 jacoco {
@@ -51,6 +52,7 @@ repositories {
 }
 
 dependencies {
+    implementation("io.codearte.gradle.nexus:gradle-nexus-staging-plugin:0.30.0")
     implementation("org.jetbrains.kotlin:kotlin-reflect:1.5.0")
     implementation("org.yaml:snakeyaml:1.28")
     implementation("org.reflections:reflections:0.9.12")
@@ -114,6 +116,10 @@ signing {
     sign(publishing.publications["mavenJava"])
 }
 
+nexusStaging {
+    serverUrl = "https://s01.oss.sonatype.org/service/local/"
+}
+
 tasks.test {
     useJUnitPlatform()
     testLogging {
@@ -127,7 +133,7 @@ tasks.test {
 }
 
 tasks.withType<KotlinCompile> {
-    kotlinOptions.jvmTarget = "15"
+    kotlinOptions.jvmTarget = "11"
 }
 
 tasks.jar {