Fix dependency issues relating to import of broom

DESCRIPTION

@@ -50,3 +50,5 @@ Enhances:
 RoxygenNote: 7.3.2.9000
 VignetteBuilder: knitr
 Roxygen: list(markdown = TRUE)
+Depends: 
+    R (>= 3.6.0)

NAMESPACE

@@ -138,6 +138,8 @@ export(weights_tests)
 export(wgttest)
 export(wrap_str)
 export(wtd.sd)
+import(broom)
+import(broom.mixed)
 import(cli)
 import(ggplot2)
 import(rlang)

R/internal.R

@@ -434,4 +434,10 @@ tidy.summary.glht <- function(x, conf.int = FALSE, conf.level = 0.95, ...) {
     out$conf.high <- confs$upr
   }
   out
-}
+}
+
+#' @import broom
+NULL
+
+#' @import broom.mixed
+NULL