text: Title: [BUG] lazy loading regression
  Body: after 0.29.0 (big pyg[ai] merge), looks like import is slow again, likely some top-level imports getting triggered:
  
  ![Screenshot from 2023-05-02 21-24-27](https://user-images.githubusercontent.com/4249447/235832882-abfa5234-4bc8-47ce-8bb0-1346e8f9efe0.png)
  
  
  for reference, pandas is just 600ms on same box -- so we can be targeting subsecond, but aren't
  
  step #1 is to profile again: https://www.graphistry.com/blog/import-pygraphistry-from-10s-to-1s-by-python-import-lazy-loading-and-tuna
  
  