added node:remove method

Author: Aleksei Konovkin

xmlua/libxml2.lua

@@ -576,6 +576,10 @@ function libxml2.xmlUnlinkNode(node)
   return ffi.gc(node, xml2.xmlFreeNode)
 end
 
+function libxml2.xmlRemoveNode(node)
+  xml2.xmlUnlinkNode(node)
+  xml2.xmlFreeNode(node)
+end
 
 function libxml2.xmlBufferCreate()
   return ffi.gc(xml2.xmlBufferCreate(), xml2.xmlBufferFree)

xmlua/node.lua

@@ -38,4 +38,9 @@ end
 function Node:unlink()
   return libxml2.xmlUnlinkNode(self.node)
 end
+
+function Node:remove()
+  return libxml2.xmlRemoveNode(self.node)
+end
+
 return Node