Two minor issues

[cutterkom]

Hey,
sorry, I am too lazy for a pull request 🙈

Two minor issues:

• tidyMCMC is part of broom.mixed now, so should add this package as a dependency

• second one is about extracting the ci's:

infer_simulation <- tibble(estimate = diff_means$stat,
                           conf.low = boostrapped_confint$`2.5%`,
                           conf.high = boostrapped_confint$`97.5%`)

should be changed to:

infer_simulation <- tibble(estimate = diff_means$stat,
                           conf.low = boostrapped_confint$lower_ci,
                           conf.high = boostrapped_confint$upper_ci)

Thanks for the great tutorial!