Added a gradient editor (should be ready for integration in Colorize node) The image in the Image node can be modified (but will not be saved yet)
Added Image node that can be used to import textures Renamed all get_shader_code methods to _get_shader code so a caching system can be integrated in node_base (and we can get rid of get_source_rgb and get_source_f functions)
Improved perlin noise and transform nodes. Added an export texture menu entry that exports a texture for the selected node.
RodZill4