use new slim that rate limits per record
use new slim that rate limits per record

helps a lot with (fixes?) the issue where writes were not being
applied in the correct order.

hammerlab/spree,cafreeman/spree,hammerlab/spree,nkhuyu/spree,codeaudit/spree,hammerlab/spree,codeaudit/spree,cafreeman/spree,cafreeman/spree,codeaudit/spree,nkhuyu/spree,nkhuyu/spree