add text-decoration as inherited property
add text-decoration as inherited property

Kozea/WeasyPrint,marclaporte/WeasyPrint,prepare/TestWeasyPrint,andrewleech/WeasyPrint,jasco/WeasyPrint,prepare/TestWeasyPrint,marclaporte/WeasyPrint,jasco/WeasyPrint,andrewleech/WeasyPrint,Kozea/WeasyPrint