Facilitate plotting to a canvas in a GUI
Merge pull request #44 from timholy/master

Fix canvas sizing
rename has to haskey. fixes #42
Merge pull request #45 from timholy/gui

Make it easier to integrate Winston into GUIs
remove unnecessary require of Gtk or Tk
Merge branch 'master' of git://github.com/nolta/Winston.jl
Fix return type

This is what I get for making cleanups after running my tests...sorry