Mavscript 0.1.9 released

This release enables drawing functionality inside mavscript templates. Drawj2d (drawj2d.sourceforge.net) is required.

Changes:
- mavscript-yacas (init.ys) provides functions for Drawj2d: SetVar(), Att(), Drawj2d()
- example template with Drawj2d drawing
- example template using Markdown markup
- Yacas 1.3.6+ (svn r3323 / git ac9da7d) --> native unicode support
- mavscript-yacas transfers unicode chars to yacas, without parameter --ascii (Linux + Mac).
- chars ² und ³ will not be converted to ^2 und ^3