Chord dict missing 6th (G6, Gm6, etc)

I love this app but it is missing some chords in the chord dictionary - Cant ever find any of the sixth chords (G6, Gm6, etc). I still highly recommend it to all. Seems like the missing 6th chords would be easy to fix...

Fb3521 about GuitarTapp PRO - Tabs & Chords