fix: use C locale by default

src/node_data.cpp

@@ -310,6 +310,7 @@ void node_data::convert_sequence_to_map(const shared_memory_holder& pMemory) {
   reset_map();
   for (std::size_t i = 0; i < m_sequence.size(); i++) {
     std::stringstream stream;
+    stream.imbue(std::locale("C"));
     stream << i;
 
     node& key = pMemory->create_node();

src/parser.cpp

@@ -77,6 +77,7 @@ void Parser::HandleYamlDirective(const Token& token) {
   }
 
   std::stringstream str(token.params[0]);
+  str.imbue(std::locale("C"));
   str >> m_pDirectives->version.major;
   str.get();
   str >> m_pDirectives->version.minor;