Tonic Textual release notes

**Blurred faces, logos, and signatures -** Updated Graph Synthesis to irreversibly blur the faces, logos, and signatures that it covers in PDFs and images, instead of drawing black boxes over them. To keep black boxes, set the `render_region_fill` job parameter to `black`, and use `render_blur_cells` (1 to 12, default 8) to set how coarse the blur is.