title and description so one can use
htmltools tags.tab and tab_id arguments to trigger
open tabs.is_id argument to step and
highlight method to allow using other selectors than
#id, see #7on_highlighted to run JavaScript functions when the
step is highlighted, see #13on_highlight_started and on_next to
step functions see #15Deprecated the has_next_step,
get_previous_el, and get_highlighted_el
methods, which were partly broken and mainly inadequate, in favour of
get_next and get_previous methods. They
contain all the information that was returned by the methods they
deprecate and work better. They are fired when the user clicks next or
previous.