1. add back tls server name field, #203
2. fix broken base64 encoded strings(Those who dropped =, SHAME ON YOU!)
3. change default routing rule to all_to_main, #209
4. other minor changes

If you find issues similar to #209, make sure you are not using all_to_direct. See wiki

如果发现了类似 #209 的问题，请检查是否 routing rule 选择了all_to_direct. 参见wiki