Merge pull request #13 from rcnlee/master

fix depwarn for replace in 0.7

Author: tawheeler

src/display.jl

@@ -2,7 +2,7 @@
 # latex treats # as a special character, so we have to escape it. See:
 # https://github.com/sisl/TikzGraphs.jl/issues/12
 
-latex_escape(s::String) = replace(s, "#", "\\#")
+latex_escape(s::String) = replace(s, "#"=>"\\#")
 
 "Convert a symbol or  into a LaTeX label"
 function latex_label(sym)