clean up

.github/workflows/build-on-pr-create.yml

@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      - name: Set up JDK 8
+      - name: Set up JDK 11
         uses: actions/setup-java@v3
         with:
           java-version: '11'

.github/workflows/maven-publish.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      - name: Set up JDK 8
+      - name: Set up JDK 11
         uses: actions/setup-java@v3
         with:
           java-version: '11'

.github/workflows/publish-javadoc.yml

@@ -31,7 +31,7 @@ jobs:
       url: ${{ steps.deployment.outputs.page_url }}
     steps:
       - uses: actions/checkout@v3
-      - name: Set up JDK 8
+      - name: Set up JDK 11
         uses: actions/setup-java@v3
         with:
           java-version: '11'

Makefile

@@ -6,3 +6,6 @@ it:
 
 build:
 	mvn clean test install -Punit-tests
+
+release:
+	 mvn clean release:prepare release:perform

README.md

@@ -78,17 +78,32 @@ your `pom.xml`:
 </repositories>
 ```
 
-You should also include [SL4J](https://www.slf4j.org/) in your `pom.xml` file if you encounter any errors related to this.
+You should also include an implementation of [SL4J](https://www.slf4j.org/) logger in your `pom.xml` file. For example,
+
+Use `slf4j-jdk14` implementation:
 
 ```xml
 
 <dependency>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-jdk14</artifactId>
-            <version>2.0.9</version>
+    <version>2.0.9</version> <!--Replace with appropriate version-->
 </dependency>
 ```
 
+or use `logback-classic` implementation:
+
+```xml
+
+<dependency>
+    <groupId>ch.qos.logback</groupId>
+    <artifactId>logback-classic</artifactId>
+    <version>1.3.11</version> <!--Replace with appropriate version-->
+</dependency>
+```
+
+or use other suitable implementations.
+
 #### Build:
 
 Build your project to resolve the dependencies:

docs/publishing/readme.md

@@ -0,0 +1,19 @@
+GPG Signing setup
+
+## GPG Setup
+
+https://central.sonatype.org/publish/requirements/gpg/#listing-keys
+
+### Steps
+
+- Create key: `gpg --gen-key` and then list keys to verify: `gpg --list-keys`
+- Distributing Your Public
+  Key: `gpg --keyserver keyserver.ubuntu.com --send-keys CA925CD6C9E8D064FF05B4728190C4130ABA0F98`
+- Now other people can import your public key from the key server to their local
+  machines: `gpg --keyserver keyserver.ubuntu.com --recv-keys CA925CD6C9E8D064FF05B4728190C4130ABA0F98`
+
+## Maven publish
+
+https://central.sonatype.org/publish/publish-maven/
+
+### Steps

pom.xml

@@ -48,7 +48,7 @@
             <plugin>
                 <groupId>org.sonatype.plugins</groupId>
                 <artifactId>nexus-staging-maven-plugin</artifactId>
-                <version>1.6.8</version>
+                <version>1.6.13</version>
                 <extensions>true</extensions>
                 <configuration>
                     <serverId>ossrh</serverId>