I now have a fully working BH2 branch for ST3
github.com/facelessuser/Bracket … ree/BH2ST3
Documentation for BracketHighlighter is sparse at most. There are no keybindings, but I provide an example keybinding file to help. You can access most of the special bracket plugins without keymaps through the menu: Tools->Packages->BracketHighlighter or through the command palette. Though I recommend creating some keymaps for things you use a lot.
If you are trying to create your own custom brackets for BH2 (which is now allowed), remember that the opening and closing regex can only have ONE capturing group.
Enjoy.