Converting a theme with many variations using a single name will result in only one theme

https://marketplace.visualstudio.com/items?itemName=johnpapa.winteriscoming

```
$ transmog https://marketplace.visualstudio.com/items\?itemName\=johnpapa.winteriscoming
Saved as "(t)Winter Is Coming"
Saved as "(t)Winter is Coming"
Saved as "(t)Winter is Coming"
Saved as "(t)Winter Is Coming"
Saved as "(t)Winter Is Coming"
Saved as "(t)Winter Is Coming"
```