Refactoring

[jacobnzw]

👉 Complete #5 before attempting to resolve! 👈

• Rename TPQKalman to StudentProcessKalman or TProcessKalman
• Group experimental classes in ssinf to the end of the file, title the section with a comment
• Rename tf_meas to tf_obs in StateSpaceInference
• Rename RBF to RBFGauss
• Rename StudentInference to StudentianInference (to match GaussianInference)
• Follow statistical convention in ndarray order of axes, e.g. storing num_vec of k-dimensional vectors should be done in ndarray of shape (num_vec, k), and not (k, num_vec) as it's done now. #25
• Drop the str in kwarg point_str of GP transforms
• Use annotations from typing module
• Ensure proper naming conventions for private functions and class member variables.
• Rename method dyn_fcn to dynamics
• Rename method dyn_fcn_dx to dynamics_jacobian
• Rename method dyn_eval to dynamics_eval
• Rename class StudentProcessKalman to StudentTProcessKalman (to match StudentTProcessTransform and StudentTProcessModel
• Rename class Model to BQModel
• GaussRV to GaussianRV
• utils.py: prepend gauss_mixture and multivariate_t with sample_
• Employ semantic versioning