## Overview
The new WriteFreely import functionality should also support plain `.txt` and `.md` files.
## Background
We should aim to be as flexible as possible in supporting writing from other sources. Some users might have a cache of plain text files saved on their computer that they'd like to publish -- we should support that.
## Implementation
Allow users to select multiple files of type `.txt` or `.md`. Parse each one and publish it as we do with the txt files from a ZIP import.