Class path contains multiple SLF4J bindings

[davidnewcomb]

Fix loggers

objc[2482]: Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/bin/java (0x101c234c0) and /Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/libinstrument.dylib (0x101cec4e0). One of the two will be used. Which one is undefined.
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/Users/davidnewcomb/.m2/repository/org/slf4j/slf4j-log4j12/1.7.29/slf4j-log4j12-1.7.29.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/Users/davidnewcomb/.m2/repository/org/slf4j/slf4j-simple/1.7.29/slf4j-simple-1.7.29.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/Users/davidnewcomb/.m2/repository/com/icegreen/greenmail-standalone/1.5.13/greenmail-standalone-1.5.13.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]