marianschmidt/msSPChelpR: msSPChelpR 0.8.6

This is the first CRAN release for the msSPChelpR package. New Features new sample data set for standard populations -> data("standard_population") new sample data set for us population -> data("population_us") (Closes #58) Breaking Changes Bug fixes sir_byfutime(): change output of integer columns to numeric to fix bug in summarize_sir_results() (Closes #59) Other changes add examples to function documentation (Closes #56) remove "R" from package title (Closes #57) update package description (Closes #54) update introduction vignette vignette("introduction"