Fix #2771: Add aliases (#2791)

* Fix #2771: Add aliases

* Added function to add aliases from vector

src/args.jl

@@ -20,7 +20,14 @@ function add_non_underscore_aliases!(aliases::Dict{Symbol,Symbol})
     end
 end
 
-
+function add_non_underscore_aliases!(aliases::Dict{Symbol,Symbol}, args::Vector{Symbol}) 
+    for arg in args 
+        s = string(arg) 
+        if '_' in s 
+            aliases[Symbol(replace(s, "_" => ""))] = arg 
+        end 
+    end 
+end 
 # ------------------------------------------------------------
 
 const _allAxes = [:auto, :left, :right]
@@ -502,6 +509,13 @@ end
 # -----------------------------------------------------------------------------
 
 
+# margin
+add_aliases(:left_margin , :leftmargin )
+add_aliases(:top_margin , :topmargin)
+add_aliases(:bottom_margin , :bottommargin)
+add_aliases(:right_margin ,:rightmargin)
+
+
 # colors
 add_aliases(:seriescolor, :c, :color, :colour)
 add_aliases(:linecolor, :lc, :lcolor, :lcolour, :linecolour)
@@ -623,7 +637,7 @@ for arg in keys(_series_defaults)
     _keyAliases[makeplural(arg)] = arg
 end
 
-
+add_non_underscore_aliases!(_keyAliases)
 
 # -----------------------------------------------------------------------------