Ok. Lots here. Updated haid_plot to accept and print a mapvizier object with only a single season's worth of data.  Took some finagling so there is a good change things will break down the line. Added a new function, calc_growth_targets to abstract away some work being done in the mapvizier function so I could use it with the single season hai_plot iwth mapvizier object. Updated documentation for galloping elephants, becca_plot, becca_plot2, haid_plot, adn calc_growth_targets.