1、android环境的重大优化：减少编译的内存消耗，堆栈溢出问题
2、空指针的保护策略
3、支持对对象方法的增加和覆盖:比如 “aaa”.isNotBlank()
4、支持对jvm中不存在类的语法检查功能

1 add rule execute method to runner
2 fix some bugs
3 enhance some basic operator:instanceof ,bit operator

1 add rule execute method to runner
2 fix some bugs
3 enhance some basic operator:instanceof ,bit operator