issues with word-wrap. To solve this we now only have nbsp when we
encounter spaces or a tab at the start of a line (to maintain indentation).
A fiddle exists to test the regex at:
https://jsfiddle.net/xtraeme/x34ao9jp/13/
* Maintains proper carriage returns in markdown output
* Indented spaces / tabs are converted to then run through ExportMD
Also added stub code to improve readability of exported filenames, but this will likely also require changes to some of the Rust code