When replacing a package a warning is given for the older version
See my stream recorded on Fri 13th.

```
   Warning: Package 'webdriver' has an incorrect structure. It should contain a single directory hierarchy for source files, named 'webdriver', but file 'webdriver.nim' is in a directory named 'src' instead. This will be an error in the future.
      Hint: If 'src' contains source files for building 'webdriver', rename it to 'webdriver'. Otherwise, prevent its installation by adding `skipDirs = @["src"]` to the .nimble file
```