updated README.md

README.md

@@ -4,7 +4,7 @@ An experimental renderer for fractals like the mandelbrot set, written in javasc
 
 This is currently less of a finished program and more a place for me to test new ideas, tools and rendering algorithms - but I hope some of these will allow me to turn this into an actual high-performance fractal explorer over time.
 
-A working version of this program can be seen on [peabrainiac.github.io/mandelbrotJS](https://peabrainiac.github.io/mandelbrotJS). If you want to run a copy of this locally instead, you can do so using any local http server (just opening `index.html` directly in the browser probably won't work); if you have python 3 installed, you can start one by running `server.py`, which will then serve all files from this folder at `localhost:8080` using the build-in `http.server` module.
+A working version of this program can be seen on [peabrainiac.github.io/mandelbrotJS](https://peabrainiac.github.io/mandelbrotJS/). If you want to run a copy of this locally instead, you can do so using any local http server (just opening `index.html` directly in the browser probably won't work); if you have python 3 installed, you can start one by running `server.py`, which will then serve all files from this folder at `localhost:8080` using the build-in `http.server` module.
 
 # Features / implementation status
  - [x] adjustable resolution, iteration cap, and formula
@@ -17,7 +17,7 @@ A working version of this program can be seen on [peabrainiac.github.io/mandelbr
    - [ ] formula parameters
  - [x] zoom depth of up to `2^50`
  - [ ] higher zoom depths
- - [ ] multithreaded rendering
+ - [x] multithreaded rendering (only works in firefox when loaded from `server.py`, but should always in chrome)
  - [x] cyclic point overlay
    - [x] shows cyclic points and their cycle lengths
    - [x] approximates the scale and orientation of minibrots and disks