Update canvg to v0.1.2
Update canvg to v0.1.2

MrRio/jsPDF,yWorks/jsPDF,MrRio/jsPDF,jutunen/jsPDF-table_2,yWorks/jsPDF,MrRio/jsPDF,yWorks/jsPDF,SpatialVision/jsPDF,jutunen/jsPDF-table_2,SpatialVision/jsPDF