Make encoder protocols overridable

[thousandsofthem]

Poison is allowing to define custom implementations for encoding specific data types.
However, if implementation already defined by poison itself, e.g.
https://github.com/devinus/poison/blob/master/lib/poison/encoder.ex#L337
then re-defining it produces nasty-looking warning
e.g.

warning: redefining module Poison.Encoder.DateTime (current version loaded from _build/dev/lib/poison/ebin/Elixir.Poison.Encoder.DateTime.beam)
  lib/protocols/dates.ex:1

Is there a way to avoid that?

(Use-case: need specific datetime format for json api)

[rohfosho]

This is also prevents exrm or distillery from building a binary of your elixir app.

[tanweerdev]

anyone update on this one?

[cj1128]

Any update ? Override default protocol implementation should be easy to do, it's common in JSON api.