text: Title: UserWarning: ``square=True`` ignored in clustermap
  Body: Hi,
  
  Whenever I run 
  
  ```
  sb.clustermap(
          master_table_top_10_pearson.transpose(),
          square=True
  )
  ```
  
  for my DataFrame which looks like a perfectly normal DataFrame
  ![image](https://user-images.githubusercontent.com/21954664/167393412-de87bd8b-a374-42c8-96d9-28e2b9e5695c.png)
  
  I get `UserWarning: ``square=True`` ignored in clustermap  warnings.warn(msg)`. However, I need the squares in my plot. I cannot see a reason why the parameter gets ignored.
  
  Thank you very much!