Resolve CI build failure

include/xlnt/worksheet/range.hpp

@@ -117,6 +117,11 @@ public:
     /// </summary>
     const class cell cell(const cell_reference &ref) const;
 
+    /// <summary>
+    /// The worksheet this range targets
+    /// </summary>
+    const worksheet & target_worksheet() const;
+
     /// <summary>
     /// Returns the reference defining the bounds of this range.
     /// </summary>

source/packaging/ext_list.cpp

@@ -139,7 +139,7 @@ const std::vector<ext_list::ext> &ext_list::extensions() const
 
 bool ext_list::operator==(const ext_list &rhs) const
 {
-    return std::equal(extensions_.begin(), extensions_.end(), rhs.extensions_.begin(), rhs.extensions_.end());
+    return extensions_ == rhs.extensions_;
 }
 
 }

source/worksheet/range.cpp

@@ -39,9 +39,7 @@ range::range(worksheet ws, const range_reference &reference, major_order order,
 {
 }
 
-range::~range()
-{
-}
+range::~range() = default;
 
 void range::clear_cells()
 {
@@ -71,6 +69,11 @@ cell_vector range::operator[](std::size_t index)
     return vector(index);
 }
 
+const worksheet &range::target_worksheet() const
+{
+    return ws_;
+}
+
 range_reference range::reference() const
 {
     return ref_;