Qlexpress

[taokan]

支持切换ognl语法为qlexpress，具体详情输入options语句查看，默认ognl
除了ognl命令，其余的命令均支持切换，使用的qlexpress语法为qlexpress4的语法

对于观察表达式，默认值：OGNL用法{params, target, returnObj} --> QLEXPRESS用法[params, target, returnObj]

举例
OGNL语法
$ watch demo.MathGame primeFactors '{params, returnObj}' '#cost>200' -x 2
QLEXPRESS4语法
$ watch demo.MathGame primeFactors '[params, returnOb]' '#cost>200' -x 2

条件表达式同样需要满足qlexpress语法
https://github.com/alibaba/QLExpress/tree/v4.0.0-beta.1

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[hengyunabc]

缺少测试，有冲突需要解决。