near 1.1 feature complete, added create_sub_buffer, enqueue_read_buffer_rect, enqueue_write_buffer_rect, enqueue_copy_buffer, enqueue_copy_buffer_rect. Added cl_buffer as example and test of buffer and buffer_rect functions
added 1.2 functions create_image, enqueue_fill_buffer, enqueue_fill_image. Added example/test cl_image.erl to demonstrate working examples