Install SublimeHighlight plugin on Sublime Text 3
I found the answer in another post:
https://stackoverflow.com/a/39432069/3511695


  
  Install Package Control inside sublime text 3. If you don't know how, follow this link here
  Open the Sublime Command Pallette by pressing CTRL+SHIFT+P on Windows and ⌘⇧P on Mac
  Type "Add Repository", and press enter or return
  
  
  Then paste this link
  https://github.com/n1k0/SublimeHighlight/tree/python3 [and press
  enter]
  
  
  Press CTRL+SHIFT+P on Windows and ⌘⇧P on Mac again and type "Install package" and press enter or return
  Type "Sublime highlight" and press enter to install the plugin
  Restart your Sublime