Peuqse

Various changes for responses uncertainties and multiple responses.
a) Applied 2dNested functions in more places
b) fixed an error in the getLogLikelihood logic for multiple responses
c) extended plotting of responses simulated uncertainties to accommodate multiple responses.
d) updated heuristic for observed uncertainties (when not provided) to be based on absolute value to accommodate negative response values.
e) extended logic to allow full covmat for each response (untested)

This update makes improvements to responses observed uncertainties and simulated responses uncertainties, in particular for their compatibility with providing None types and functions rather than numbers, zeros, or blank lists. During this update, a bug in simulated responses uncertainties was found in DoE due to a 'typo' (the copying and pasting of the wrong variable).

Bug fix for when a function is provided instead of an array-like object for simulated response uncertainties.

Improved plotting: When there are many parameters, by default there will be no large scatter_matrix made nor a combined mumpce plot. Now, individual contour plots are made by default for each possible parameter pairing. Additionally, this update has improved Contour plot settings to have more 'contour_settings_custom' arguments, and the same for the scatter matrix.

The contour plot settings have been standardized into contour_plot_settings in UserInput.

Added simulatedResponses bounds feature so that a person can intentionally restrict their posterior to only physically realistic regions. This is desirable for optimizing surrogate models, for example.
Made multistart more robust against errors when only non-finite probability points are found.