Update README.md

Author: thygate

README.md

@@ -10,6 +10,7 @@ To generate realistic depth maps from a single image, this script uses code and
 
 ## Changelog
 * v0.3.1 bugfix
+    * small speed increase for anaglyph creation
     * clone midas repo before midas 3.1 to fix issue (see [here](https://github.com/thygate/stable-diffusion-webui-depthmap-script/issues/55#issue-1510266008))
 * v0.3.0 improved stereo image generation
     * New improved technique for generating stereo images and balancing distortion between eyes by [@semjon00](https://github.com/semjon00) (See [here](https://github.com/thygate/stable-diffusion-webui-depthmap-script/pull/51))