More detailed parse error reporting

[TaoK]

Jeff Clark suggests that it would be nice if the formatter pin-pointed the apparent location in the SQL, of the error. In an HTML output it could be highlighted, for example, and in text output it could be marked with a comment.

[TaoK]

No comment for now, seems like it would do more harm than good - might consider adding it as an option at a later time

[TaoK]

Closing this for now, might consider adding a SQL Comment in the likely spot (end of the detected error region) for NON-colorizing SQL if there is any demand.