survminer 0.4.9

Minor changes

• A new vignette added to show how to display interaction using ggforest() (#496).
• Since ggplot2 v3.3.0, the function element_text() issues a warning when vectorized arguments are provided, as in colour = c("red", "green", "blue"). This is a breaking change affecting the function ggsurvtable(). To fix this, the function ggtext::element_markdown() is now used in place of element_text() to handle vectorized colors (issue #455 fixed by pull #503).

Bug fixes

• The Gehan-Breslow p-value is now correctly computed when the option log.rank.weights = "n" is specified in the function ggsurvplot() (#453)
• In ggsurvplot() examples, the function gridExtra::rbind.gtable() is now replaced by gridExtra::gtable_rbind() (@jan-imbi, pull #493).