Fixed width file parser.
   Code adapted from http://www.lexicallyscoped.com/2015/01/05/parsing-flat-files-in-clojure.html.

(def parse-rules
  {:cols [{:name :company
           :slice [0 62]}
          {:name :form
           :slice [62 74]}
          {:name :cik
           :slice [74 86]
           :type :long}
          {:name :date
           :slice [86 98]
           :type :date}
          {:name :file
           :slice [98]}]
   :skip-lines 10
   :skip-line? (some-fn str/blank? (partial re-seq #"^-+$"))})