mutt header caching

I was wondering why when I built mutt 1.5.13 I only noticed a slight performance boost over 1.4.x when headers were being loaded. I finally realized I never configured header caching!! Here are my newly revised compile time options:

./configure --enable-pop --enable-imap --with-gss --with-ssl --with-sasl --enable-hcache

From there it's just a matter of adding 'set header_cache=/path/to/cache' to your muttrc. Go ahead, try it out for yourself!