text: Title: [ENH] Warning cleanup
  Body: * Good news: The new GHA will reject on flake8 errors, and a bunch are on by default via the cleanup in  https://github.com/graphistry/pygraphistry/pull/206  !
  
  * Less good news: Skip list has some bigger warning count ones still on the skiplist:
  
  - [ ] E121
  - [ ] E123
  - [ ] E128
  - [ ] E144
  - [ ] E201
  - [ ] E202
  - [ ] E203
  - [ ] E231
  - [ ] E251
  - [ ] E265
  - [ ] E301
  - [ ] E302
  - [ ] E303
  - [ ] E401
  - [ ] E501
  - [ ] E722
  - [ ] F401
  - [ ] W291
  - [ ] W293