Add a filter state specifications to a trelliscope display

Usage

set_default_filters(trdf, ..., add = TRUE)

trdf: A trelliscope data frame created with as_trelliscope_df() or a data frame which will be cast as such.
...: Filter state specifications (e.g. filter_string(), filter_range()).
add: Should existing filter state specifications be added to? Default is TRUE. If FALSE, the entire sort specification will be overridden.