Measuring and wrapping text in OpenSCAD

OpenSCAD does not have built-in functions for measuring text size and word wrapping text. This library provides these.

Make sure you have `fontmetricsdata.scad` and `fontmetrics.scad` in your current directory and that you start your code with

use ;

Public modules:
* `drawWrappedText(text,font="Liberation Sans",size=10,spacing=1,linespacing=1,indent=0,width=800,halign="left")`: wrap `text` to the specified width; you can have multiple paragraphs separated by `\n`, and you can choos