Num larger > 1000 ignored.
Multiple delimiter supported.
Delimiter should start and end with []
Added delimiterfilter to filter out delimiter
Added tests for multi characters delimiter.
Use regex to filter out delimiter
Fix delimiter replacement error
Added test for different delimiters with different length.
Delimiter filter accept line number as delimiter
Added number filter to filter out numbers.
Added test for single number.
Added tests for multiple numbers.
Added tests for multiple numbers
Added tests for big number
Added tests for string end with delimiter.
Added negative number filter
Added test for different delimiters with different length.
Added tests for throwing exception when format is not correct.