Logger with formatter
Replace Buffer.t
by Format.formatter
in Logger signature.
Typing of "%a"
specifications is now
Format.formatter -> 'a -> unit
instead of
Buffer.t -> 'a -> unit
:
calls to *_bpr
functions (printers to buffers) in logging parameters
have to be replaced with *_fpr
(printers to formatters).
The behavior should be the same as before.