Use willReadFrequently on font drawing canvases, closes #20
Use willReadFrequently on font drawing canvases, closes #20

timdream/wordcloud2.js,timdream/wordcloud2.js,ZainRizvi/wordcloud2.js,timdream/wordcloud2.js,alex2wong/wordcloud2.js,alex2wong/wordcloud2.js,ZainRizvi/wordcloud2.js,ZainRizvi/wordcloud2.js,alex2wong/wordcloud2.js