Add precision to Number, backend only (#1125)
* integer type
* Add integer parameter for Number
* Pass down integer prop to Number instead:
* Format + update test
* Update interpretation neighbors code + docstrings
* Rename prop to type as opposed to integer
* Update error message + test
* Update docstring
* Implement precision
* Add test + format
* Add test for precision=2
* Change round logic for precision=0
* integer type
* Add integer parameter for Number
* Pass down integer prop to Number instead:
* Format + update test
* Rename prop to type as opposed to integer
* Implement precision
* Add test + format
* Address docstrings
* Fix test + rebase
