Add composer to pull down

[ohrenkino]

see e.g. here:

Defined values for 'Period' field

I nave created a field for 'Period' as I have a classical music collection. It has fixed values of Medieval, Renaissance, Baroque, Classical ... etc I would really like to be able to be able to utilise a periods.ini file similar to that used with genre. Any chance of this being enabled? This would prevent creating fields such Renaisance as a result of mis-typing! Any help on this greatly appreciated.