[AUCTeX] Make RefTeX select show date entries

[Elias Assarsson]

Hello,

When using biblatex one often set the date of bibentry with the 'date' 
key rather than the 'year' key. The problem with doing this is that 
RefTeX Select does not recognize 'date' so it is not shown. Is it 
possible to make RefTeX Select recognize 'date' in addition to 'year'? I 
have looked through the configuration variables without finding 
something to change.

Regards,
Elias