When trying to get 2 or more columns out of the DataFrame, only getting the last column **To Reproduce** ```js const df = new dfd.DataFrame([{a:1,b:2,c:3},{a:11,b:22,c:33},{a:111,b:222,c:333}] df['a','b'].print() ``` **Expected behavior** ```js df['a','b'] ``` should return a,b columns
When trying to get 2 or more columns out of the DataFrame, only getting the last column
To Reproduce
Expected behavior
should return a,b columns