MeSO-net has two network codes for different time periods:
0131for data after 201704010231for data 20080516-20170401
In previous versions, you need to know the above information and choose the correct
network code when requesting data before or after 20170401. In this new version, HinetPy
can automatically switch the network code for you, depending on the data time you're
requesting. Note that you will get an error if the time span you requested crosses the
date 20170401.