Sending code to ESP32 slow using EspruinoTools -- says "Set Slow Write = true"

Thanks. I actually added an option on my local CLI, -s --serial-block-size. I can send you a pull request if useful. I found that on the ESP32 128 works well enough. I didn't look at adding this in the Web IDE because I don't tend to use it except for testing tiny things (partly due to my Typescript pipeline...)