Package documentation updated.
interpolate function now accepts tibbles.
Informative comment added to hm_report and report_miss
functions.
The hydromet_*-classes now accepts tibbles. Also, the
column classes of the slots could be any (and not just numeric).
hm_build_generic() method has been created. The function allows
for the creation of an hydromet_station-class using generic
raw files.
The hydromet_station class has new slots: outgoing longwave
and shortwave radiation.