feat: 增加对删除线的支持 (#6)

fix #5

structeffects.go

@@ -111,6 +111,12 @@ type VertAlign struct {
 	Val     string   `xml:"w:val,attr"`
 }
 
+// Strike ...
+type Strike struct {
+	XMLName xml.Name `xml:"w:strike,omitempty"`
+	Val     string   `xml:"w:val,attr"`
+}
+
 // Shade is an element that represents a shading pattern applied to a document element.
 type Shade struct {
 	XMLName       xml.Name `xml:"w:shd,omitempty"`

structrun.go

@@ -212,6 +212,7 @@ type RunProperties struct {
 	Kern      *Kern
 	Underline *Underline
 	VertAlign *VertAlign
+	Strike    *Strike
 }
 
 // UnmarshalXML ...
@@ -297,6 +298,10 @@ func (r *RunProperties) UnmarshalXML(d *xml.Decoder, _ xml.StartElement) error {
 				var value VertAlign
 				value.Val = getAtt(tt.Attr, "val")
 				r.VertAlign = &value
+			case "strike":
+				var value Strike
+				value.Val = getAtt(tt.Attr, "val")
+				r.Strike = &value
 			default:
 				err = d.Skip() // skip unsupported tags
 				if err != nil {