Use Apache commons-cli instead of deprecated Groovy lib

Author: briacp

build.gradle

@@ -1,9 +1,9 @@
 plugins {
     id 'java'
     id 'distribution'
-    id 'maven'
     id 'idea'
 	id 'eclipse'
+	id 'com.github.johnrengelman.shadow' version '6.1.0'
 }
 
 repositories {
@@ -13,28 +13,13 @@ repositories {
     jcenter()
 }
 
-def compileDependencies = [
-		'org.omegat:omegat:4.1.3-02',
-        'commons-io:commons-io:2.4',
-        'commons-lang:commons-lang:2.6'
-]
-
-def testDependencies = [
-        'junit:junit:4.12',
-        'xmlunit:xmlunit:1.6',
-        'org.madlonkay.supertmxmerge:supertmxmerge:2.0.1'
-]
-
 dependencies {
+	compileOnly 'org.omegat:omegat:5.4.1'
+	compileOnly 'commons-io:commons-io:2.7'
+	compileOnly 'commons-lang:commons-lang:2.6'
+	compileOnly 'org.omegat:lib-mnemonics:1.0'
 
-    compileDependencies.each {
-        compileOnly it
-        testImplementation it
-    }
-
-    testDependencies.each {
-        testImplementation it
-    }
+	implementation 'commons-cli:commons-cli:1.4'
 }
 
 
@@ -47,24 +32,21 @@ jar {
         // plugin's main class name is defined in gradle.properties file.
         attributes(
                 "OmegaT-Plugins": pluginMainClass,
-                "Plugin-Version": version,
+                "Plugin-Version": project.version,
                 "Plugin-Name": pluginName,
                 "Plugin-Author": pluginAuthor,
                 "Plugin-Description": pluginDescription,
                 "Main-Class": pluginMainClass,
                 // Used to access the name/version inside the plugin
                 "Implementation-Title": pluginName,
-                "Implementation-Version": version
+                "Implementation-Version": project.version
         )
     }
 }
 
-artifacts {
-    archives jar
-}
-
-distTar {
-    compression = Compression.GZIP
+shadowJar {
+	// remove the '-all' suffix
+	classifier = ''
 }
 
 distributions {