skywalking-application-toolkit com.a.eye 3.0.1-2017 4.0.0 skywalking-toolkit-log4j-1.x log4j log4j 1.2.17 provided org.apache.maven.plugins maven-source-plugin attach-sources jar 2.4 bintray-wu-sheng-sky-walking-repository wu-sheng-sky-walking-repository https://api.bintray.com/maven/wu-sheng/skywalking/com.a.eye.skywalking-toolkit-log4j-1.x/;publish=1