SNO file puts SMETIO into an infinite loop
This issue was reported by Till Schumann.
When using the SMET formatted snow file attached here below, snowpack gets trapped in an infinite loop. After investigations in Kdbg, this happens in SMETReader::read_data_ascii:1056 : all lines that are returned by getline are empty, therefore the line counter is incremented, no line is processed and it never gets out of the loop.