v4.4.7

Updates based on version 4.4.6

Fixed the bug in the LIMITATION_1 and LIMITATION_2 of upwind least square scheme

-- adv_uv_edge_gcy.F
-- adv_uv_edge_gcn.F
-- advave_edge_gcy.F
-- advave_edge_gcn.F
-- advection_edge_gcy.F
-- advection_edge_gcn.F

Output the variable 'time' in double precision and the unit of second

-- mod_nctools.F
-- mod_ncdio.F
-- mod_main.F
-- mod_input.F
-- mod_station_timeseries.F
(For tide case, please change the attribute 'units' of the variable 'time_origin' in the input from 'days since 0.0' to 'seconds since 0.0.' )

Remove the SSH control factor on depth

-- mod_assim.F