To match propane-4.0 release

3.5

Simplify RGB cube by using Vec2D, ArcBall and GfxRender

Some refactoring of propane needs these changes

Propane GfxRender and ShapeRender have been simplified so can be called with Propane::GfxRender and Propane::ShapeRender, there may be a couple of new examples to try.

3.3

Update examples to use OpenSimplex2 (-1.0..1.0) instead of (0..1.0).

Expand PDF examples

3.2

exclude data

Added svg and pdf library examples

Also update to use OpenSimplex2 for noise.

For propane 3.8.0

Modified some noise examples to demonstrate usage of noise_mode.

For propane-3.6.0+

Now voronoi distance shader without pixel flow library, plus solid text geomerative example.

For propane-3.5.0+

Always moving forward

For propane-3.4.2

Add minim examples, please feel free to expand.

For propane-2.4.1

Ditch GLVideo in favor of latest beta Video library.