v0.8.1

Allow newer versions (> 1.5) of Poison.

v0.8.0

Fix Elixir 1.2+ deprecation warnings.

v0.7.0

Update to use Plug 1.0.

v0.6.1

Ensure bot plain text and JSON responses have the charset header set to "utf-8".

v0.6.0

Add support for Plug 0.13.

v0.5.0

Support alternate way of handling missing headers.

v0.4.1

Fix inline documentation.

v0.4.0

Pass both connection key and header key to the callback function.

v0.3.2

Properly handle multiple missing headers.

v0.3.1

Remove redundant handling on nil header values. The HTTP server will filter them before they reach conn.req_headers.