more optimizations

src/Matrix.cpp

@@ -187,3 +187,15 @@ Matrix Matrix::SubMatrix(
 
 	return result;
 }
+
+Matrix::iterator Matrix::begin() {
+	return m_Data.begin();
+}
+
+Matrix::iterator Matrix::end() {
+	return m_Data.end();
+}
+
+Matrix::iterator Matrix::GetLineIterator(std::size_t a_Raw) {
+	return m_Data.begin() + a_Raw * GetColumnCount();
+}