Documentation

converts a files contents from the LHS birdtick style to markdown, replacing the code marked by birdticks with ```haskell ... ```

converts a files contents from git flavoured markdown to literate haskell, replacing code marked with ```haskell ...``` with > birdticks and code marked with ``` ... ``` with < birdticks quotes are converted to `NOTE:` marked lines.

uses isFirst to check multiple characters

checks wether the first two characters of a string are a given character and ' ' useful to look for code and quotes