add RateLimiter and made search work with functions again, which seemed to make things simpler
add RateLimiter and made search work with functions again, which seemed to make things simpler

miku/twarc,hugovk/twarc,miku/twarc,edsu/twarc,remagio/twarc,DocNow/twarc,remagio/twarc,kevinbgunn/twarc,kevinbgunn/twarc,ericscartier/twarc,ericscartier/twarc