updating to v0.7.0 /installing v0.7.0 exists with error

devtools::install_git("https://gitlab.com/hrbrmstr/ndjson.git")
or
updating ndjson package  from source gives me:

```
*** arch - i386
Fehler in .shlib_internal(args) : 
  C++14 standard requested but CXX14 is not defined
```

Any ideas?

R 3.5.1 Windows