Is there somebody still using arduino-mode?

[stardiviner <numbchild@gmail.com>]

I found arduino-mode and using it for a few days. But got some errors.

I found there are some issues on GitHub for a long time. and this repo 
on GitHub is not been updated for a long time. I emailed the maintainer. 
But he is not responding. And I check out some forks on GitHub of the 
original repo. I'm using the forwardest fork "mavit/arduino-mode" and 
"https://github.com/bwachter/arduino-mode".

```

(use-package arduino-mode
   :quelpa (arduino-mode :fetcher github :repo "mavit/arduino-mode")
   :bind (:map arduino-mode-map
               ("C-c C-c" . arduino-upload))
   :config
   (setq arduino-font-lock-extra-types t)
   )

```

I got this error:

```

Eval error in the ‘c-lang-defvar’ or ‘c-lang-setvar’ for ‘c-known-type-key’
(fallback source eval - arduino-mode compiled with CC Mode 5.33 but 
loaded with
5.33.1): (wrong-type-argument sequencep t)
```

Hope someone can fix it. Because I'm not using the original repo and 
using a fork instead. So I don't mind use someone's fork.