Conduct Sensitivity Analysis with Continuous Exposures and Binary or Continuous Outcomes

Performs sensitivity analysis for the sharp null, attributable effects, and weak nulls in matched studies with continuous exposures and binary or continuous outcomes as described in Zhang, Small, Heng (2024) and Zhang, Heng (2024) . Two of the functions require installation of the 'Gurobi' optimizer. Please see < https://docs.gurobi.com/current/#refman/ins_the_r_package.html> for guidance.