Test whether different types

[sampan501]

Is your feature request related to a problem? Please describe.

Currently, methods in hyppo cast the input values to a float. While this is fine in most cases, it would be better to test if this restriction can be loosened to allow other types like int and see if the unit tests still pass.

Describe the solution you'd like

The solution has 3 steps:

• Remove the float casting in _CheckInputs. See if x can be array_like like here: https://scipy.github.io/devdocs/reference/generated/scipy.stats.multivariate_normal.html?highlight=multivariate#scipy.stats.multivariate_normal. This involves changing all the input checks into something similar to what is in SciPy
• See if unit tests still pass
• Change documentation to reflect if inputs are array_like

Describe alternatives you've considered

Additional context (e.g. screenshots)

[sampan501]

@darsh-patel This isn't enough for an NDD project. Didn't we talk last semester about cleaning up the goodness of fit module? And adding more tests?