FIND 0.1.1

• Initial CRAN submission.
• Provides design constructors for 3plus3, i3plus3, g3, boin, and mtpi2 designs.
• Implements get_decision() for generating decision tables.
• Implements decision_table() for comparing decision tables across designs.
• Implements run_simulation() for running simulations.
• Implements oc_plot() for comparing operating characteristics.