WIP: render-lite using multithreading and inkscape 1.0 compatibilty
This PR change render-lite to use multithreading based on number of cores. In addition it contains also inkscape 1.0 compatibility and an optimizing to reduce size of generated png
This PR change render-lite to use multithreading based on number of cores. In addition it contains also inkscape 1.0 compatibility and an optimizing to reduce size of generated png