windows carriage return

thanks for this wonderful tool

i use illiterate on windows 
in some piece of code i had a bat file 
but because carriage return have to be \r\n instead of \n bat execution fail

could we imagine adding a param to adjust that on element locally 

instead of

~~~
```bat {export=./run_generate.bat}
REM some code
```
~~~
write
~~~
```bat {export=./run_generate.bat, cr=windows}
REM some code
```
~~~
