Create working example that simply updates DOXY_QC from 1 to 3 in BR or BD files

[cgrdn]

I think this is close to existing already, with the exception that the HISTORY variables are a little too hard coded in export_files() (see #65). But something like:

import bgcArgoDMQC as bgc

flt = bgc.sprof(my_wmo)
flt.update_field('DOXY_QC', where=flt.DOXY_QC == 1)
flt.export_files(data_mode='D')

should work.

Population of SCIENTIFIC_CALIB_COMMENT and HISTORY variables is definitely over specific right now. Perhaps an argument for use cases in export_files would fix this.

[cgrdn]

Further to this, I think a something like a flt.bio_prof(wmo, cycles=[]) would be good for this. Loading the sprof to adjust flags of BR files makes no sense semantically, the purpose of the sprof is to calculate gain.

[cgrdn]

Effective script:

import bgcArgoDMQC as bgc

index = bgc.get_index()
meds  = index.loc[index.institution == 'ME']

for wmo in meds['WMO'].unique():
    profs = bgc.bio_prof(wmo)
    profs.update_field('DOXY_QC', 3, where=profs,.DOXY_QC == 1)
    profs.export_files(mode='R')