I've noticed that about 10% of the classes in javassist-3.14.0-GA.jar from Maven differ from those in javassist.jar from javassist-3.14.0-GA.zip. Specifically the classes below. Can anyone tell me what the differences are and why?

javassist/ClassPool$1.class

javassist/CtClass$1.class

javassist/JarDirClassPath$1.class

javassist/SerialVersionUID$1.class

javassist/SerialVersionUID$2.class

javassist/SerialVersionUID$3.class

javassist/bytecode/CodeIterator$Switcher.class

javassist/bytecode/Descriptor$PrettyPrinter.class

javassist/bytecode/Descriptor.class

javassist/bytecode/analysis/Executor.class

javassist/bytecode/analysis/FramePrinter.class

javassist/compiler/CodeGen$1.class

javassist/compiler/CodeGen.class

javassist/compiler/Javac$1.class

javassist/compiler/Javac$2.class

javassist/compiler/Javac$3.class

javassist/compiler/Lex.class

javassist/compiler/MemberResolver.class

javassist/compiler/Parser.class

javassist/compiler/TypeChecker.class

javassist/compiler/ast/ASTList.class

javassist/util/HotSwapper$1.class

javassist/util/proxy/ProxyFactory$1.class

javassist/util/proxy/ProxyFactory$2.class

javassist/util/proxy/RuntimeSupport.class

javassist/util/proxy/SecurityActions$1.class

javassist/util/proxy/SecurityActions$2.class

javassist/util/proxy/SecurityActions$3.class

javassist/util/proxy/SecurityActions$4.class

javassist/util/proxy/SecurityActions$5.class

javassist/util/proxy/SecurityActions$6.class

javassist/util/proxy/SerializedProxy$1.class