lib: opts add OptionFloat

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
contrib: intro the svg_to_png_and_nit project

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
lib: adds support lib for svg_to_png_and_nit tool

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
contrib/inkscape_tools: intro the svg_to_icons tool

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
contrib/inkscape_tools: add test for icons

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
tests: add inkscape_tools to testfull.sh

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
Merge branch 'master' into inkscape-tool

To get import of nested modules.
contrib/inkscape_tools: update to use a nested module

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
Merge: Inkscape tools

Intro 2 tools based on Inkscape.

__svg_to_png_and_nit__ reads a SVG file and outputs 2 files:
* A single png file
* A Nit source file and class, with attributes pointing to all objects with IDs beginning with 0.

__svg_to_icons__ Generates PNG files from a SVG file. It can output the format expected by Android projects.

Pull-Request: #406
Reviewed-by: Jean Privat <jean@pryen.org>
Reviewed-by: Lucas Bajolet <r4pass@hotmail.com>