A replacement for clojure.core/defn that accumuldates profiling data. Converts a function like:

  (defnp add-1
    "Adds one to an arg"
    [x]
    (inc x))

to:

  (defn add-1
    ""   ; dummy docstring
    [x]
    (with-timer-accum :demo.core/add-1    ; lookup key is fully-qualified function name
      (inc x)))  ; function body unchanged

Does not handle function metadata like (defn ^:private my-fn ...) 

Prints profile stats to stdout.

Returns a vector of profile stats sorted by ID.

Returns a map of all profile stats, keyed by ID.

Return basic stats for a given id

Updates timing stats for a given key & elapsed time

Reset all timer statistics to empty

Times execution of Clojure forms, accumulating results in timer-stats map under key `id`.

Times execution of Clojure forms, printing the result to the screen. 

Times execution of Clojure forms, returning a result map like:
{:result result  :seconds seconds}