Remove 'java-library and switch 'api to 'implementation'

Author: nedtwigg

build.gradle

@@ -13,7 +13,6 @@ apply from: 干.file('spotless/freshmark.gradle')
 
 subprojects { subProject ->
 	apply from: 干.file('base/java8.gradle')
-	apply plugin: 'java-library'
 
 	if (subProject.name == 'durian-swt') {
 		// configured there
@@ -31,7 +30,7 @@ subprojects { subProject ->
 			}
 		}
 		dependencies {
-			api project(':durian-swt')
+			implementation project(':durian-swt')
 		}
 		configurations.all {
 			resolutionStrategy.eachDependency { DependencyResolveDetails details ->

durian-swt/build.gradle

@@ -1,13 +1,13 @@
 apply plugin: 'com.diffplug.gradle.eclipse.mavencentral'
 eclipseMavenCentral { release SWT_VERSION, {
-	api 'org.eclipse.swt'
-	api 'org.eclipse.jface'
+	implementation 'org.eclipse.swt'
+	implementation 'org.eclipse.jface'
 	useNativesForRunningPlatform()
 } }
 dependencies {
-	api project(':durian-swt.os')
-	api "com.diffplug.durian:durian-rx:$VER_DURIAN_RX"
-	api "io.reactivex.rxjava2:rxjava:$VER_RXJAVA"
+	implementation project(':durian-swt.os')
+	implementation "com.diffplug.durian:durian-rx:$VER_DURIAN_RX"
+	implementation "io.reactivex.rxjava2:rxjava:$VER_RXJAVA"
 	implementation "com.diffplug.durian:durian-core:$VER_DURIAN"
 	implementation "com.diffplug.durian:durian-collect:$VER_DURIAN"
 	implementation "com.diffplug.durian:durian-concurrent:$VER_DURIAN"