Update package version to 1.13.1 and add 'color' to global variables in classes.R

Author: stemangiola

DESCRIPTION

@@ -1,7 +1,7 @@
 Type: Package
 Package: tidyHeatmap
 Title: A Tidy Implementation of Heatmap
-Version: 1.13.0
+Version: 1.13.1
 Authors@R: 
     c(person(given = "Stefano",
            family = "Mangiola",

R/classes.R

@@ -1,5 +1,5 @@
 # Specify undefined global variables for R CMD check
-utils::globalVariables(c("shape", "size", "text", ":="))
+utils::globalVariables(c("shape", "size", "text", "color", ":="))
 
 # InputHeatmap class definition
 InputHeatmap <- setClass(