Add go-mode to which-function modes
Update emacs24.4 predicate check
Re-enable sematic breadcrumbs for python
Do not enable flycheck for hardhat protected files
Add to rainbow-identifiers config (not active)

Maybe it should be enabled on buffers protected by hardhat which might
benefit from it when reading.

The hook function enabling this is commented for now.
Add plant uml skeleton snippet
Update plantuml-mode config