Remove OS specific flags

[RPG-Alex]

Currently the windows os flag is used to filter out \r\n. This should theoretically be unnecessary if the parsing switches to parsing on lines() which will eliminate the need to parse and/or pay attention to the \n or the \r.

For this task:

• Remove the cfg!(windows) use
• Redo parsing logic to work with lines()
• Re-implement tests as needed to account for removal of \n