Don't load entire file into memory at once

[scott-8]

Additions to this PR:

• Load files line by line instead of all at once
• Write files line by line instead of all at once
• Added newline parameter to the parser to specify how to split the lines
• Added the ability to write a file to a Path, and added an encoding parameter to go along with this
• Allow you to specify the newline character when writing a file, instead of fixing it to \n

Behavior that might be breaking

• Because file objects are read line by line, the clean function acts line by line instead of on the whole file. There is a separate clean function that runs on the first line only

[J535D165]

Very nice improvement!!

[J535D165]

I would like to see this PR merged :) I think these additions are very welcome.

[scott-8]

@shapiromatron

[shapiromatron]

LGTM!