Stop ggplot2 Guide Warning (resolves #15)

* Update guide parameter since ggplot2 3.3.4 * Update News
jschoeley · Aug 24, 2021 · e52c531 · e52c531
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diff --git a/NEWS.md b/NEWS.md
@@ -1,6 +1,7 @@
 # tricolore 1.2.3
 
 * add startup message and citation information
+* establish compatibility with ggplot2 3.3.4/3.3.5 (@hhmacedo, #13)
 
 # tricolore 1.2.2
 

diff --git a/R/tricolore.R b/R/tricolore.R
@@ -722,8 +722,8 @@ BasicKey <- function(legend_surface, limits, brklab, show_center, center, lwd) {
     geom_polygon(aes_string(group = 'id', fill = 'rgb', color = 'rgb'), lwd = lwd) +
     geom_mask() +
     # rgb color input
-    scale_color_identity(guide = FALSE) +
-    scale_fill_identity(guide = FALSE) +
+    scale_color_identity(guide = "none") +
+    scale_fill_identity(guide = "none") +
     # theme
     theme_classic() +
     theme(tern.axis.title.L = element_text(hjust = 0.2, vjust = 1, angle = -60),