Feature Request: iterate keys

[llimllib]

Python's cdb library has a handy function to iterate all keys in a cdb database: http://pilcrow.madison.wi.us/pycdb_doc.html

It would be awesome to be able to do the same with go-cdb.

(Also the function for # of items in a cdb is handy and would be nice)

[orestonce]

I created.cdb package, and it support "Sequential iteration" , "Find iteration" ，and easy create cdb file and bytes, etc. Please visite:

https://github.com/orestonce/cdb

[llimllib]

Cool, good luck! I wish I even remembered what I was using cdb for almost 8 years ago haha