create RELEASING.md, improve release pom profile

Author: radist-nt

RELEASING.md

@@ -0,0 +1,22 @@
+# Releasing
+
+## Before release checklist
+
+- maven build is ok
+- local repo sync with github
+
+## Prepare release checklist
+
+- incremented version in `pom.xml` and `README.md`
+- added signed release commit with comment `release X.X.X`
+- added tag `X.X.X` to commit
+- commit and tag are pushed to github
+
+## Release to maven
+
+- Run command `mvn -P release deploy`
+- Login to https://oss.sonatype.org/, navigate to staging repositories, verify repository and promote it
+
+
+
+

pom.xml

@@ -244,7 +244,7 @@ file.withWriter("UTF-8") {writer -> writer.writeLine str} ]]>
 						<executions>
 							<execution>
 								<id>attach-sources</id>
-								<phase>package</phase>
+								<phase>deploy</phase>
 								<goals>
 									<goal>jar-no-fork</goal>
 								</goals>
@@ -261,7 +261,7 @@ file.withWriter("UTF-8") {writer -> writer.writeLine str} ]]>
 						<executions>
 							<execution>
 								<id>attach-javadocs</id>
-								<phase>package</phase>
+								<phase>deploy</phase>
 								<goals>
 									<goal>jar</goal>
 								</goals>
@@ -286,13 +286,27 @@ file.withWriter("UTF-8") {writer -> writer.writeLine str} ]]>
 						<executions>
 							<execution>
 								<id>sign-artifacts</id>
-								<phase>verify</phase>
+								<phase>deploy</phase>
 								<goals>
 									<goal>sign</goal>
 								</goals>
 							</execution>
 						</executions>
 					</plugin>
+					<plugin>
+						<groupId>org.apache.maven.plugins</groupId>
+						<artifactId>maven-deploy-plugin</artifactId>
+						<version>3.0.0</version>
+						<executions>
+							<execution>
+								<id>deploy</id>
+								<phase>deploy</phase>
+								<goals>
+									<goal>deploy</goal>
+								</goals>
+							</execution>
+						</executions>
+					</plugin>
 				</plugins>
 			</build>
 		</profile>