Configuring exercism on MacOS seems broken

I'm on MacOs Mojave, and things used to work months ago when I was using this cli.

Now, it seems that, when you set an workspace, and execute `exercism troubleshoot`, it only recognizes the token when you are in the directory that you issued the `exercism configure` command. See:

```
~ $ exercism configure --token=*************** --workspace=/Users/teixeira/Exercism

You have configured the Exercism command-line client:

Config dir: ~/.config/exercism
Token: (-t, --token) ***********
Workspace: (-w, --workspace) /Users/teixeira/Exercism
API Base URL: (-a, --api) https://api.exercism.io/v1

```

```
~ $ exercism troubleshoot

Troubleshooting Information
===========================

Version
----------------
Current: 3.0.13
Latest: 3.0.13

Operating System
----------------
OS: darwin
Architecture: amd64

Configuration
----------------
Home: /Users/teixeira
Workspace: /Users/teixeira/Exercism
Config: ~/.config/exercism
API key: 4358*****************************657

API Reachability
----------------

GitHub:
* https://api.github.com
* [connected]
* 155.35934ms

Exercism:
* https://api.exercism.io/v1/ping
* [connected]
* 1.224142255s

If you are having trouble please file a GitHub issue at
https://github.com/exercism/exercism.io/issues and include
this information.
```

So token was recognized ok. Now if I cd into a subdir:

```
~ $ cd Exercism/python/
~/Exercism/python $ ls
acronym grade-school hello-world isogram luhn matrix scrabble-score twelve-days word-count
clock hamming high-scores kindergarten-garden markdown raindrops teste_markdown.py two-fer
~/Exercism/python $ exercism troubleshoot

Troubleshooting Information
===========================

Version
----------------
Current: 3.0.13
Latest: 3.0.13

Operating System
----------------
OS: darwin
Architecture: amd64

Configuration
----------------
Home: /Users/teixeira
Workspace: /Users/teixeira/Exercism (default)
Config: ~/.config/exercism
API key:
Find your API key at https://exercism.io/my/settings

API Reachability
----------------

GitHub:
* https://api.github.com
* [connected]
* 148.12741ms

Exercism:
* https://api.exercism.io/v1/ping
* [connected]
* 1.101968641s

If you are having trouble please file a GitHub issue at
https://github.com/exercism/exercism.io/issues and include
this information.
```

Not configured!

The workaround is to call `exercism configure` inside EVERY single challenge directory, so it creates a `~/.config` structure and recognizes the token, but this is broken and didn't work like that before.....

Thanks for your attention.