Printbuddies

Refactorings

* import `typing_extensions` instead of `typing`

Refactorings

* add additional `__init__` args

Refactorings

* change `TaskProgressColumn` default significant digits

New Features

* add `Grid` class
Performance improvements

* calculate gradient sequence without needing to split text into batches

Refactorings

* clean up namespace by condensing imports
* override `BarColumn` and `TaskProgressColumn` instead of using get functions

Fixes

* fix type checker not recognizing `add_task` override
Refactorings

* make `track` uses same default columns as `Progress`
* make progbar tests faster
* remove unneeded `Progress.__init__()` override