Bravado-core

------------------
- Make sure spaces in path param values are quoted using percent notation instead of using ``+``. `Issue 278`_, `PR 279`_

------------------
- Fix regression if ``internally_dereference_refs`` is used. `Issue 275`_, `PR 276`_

------------------
- No longer make sure that all config keys are known; this allows users of the library to store additional configuration. - `PR 274`_

------------------
- Refactor: model discovery is now handled in ``bravado_core.model`` - `PR 270`_
- Remove deprecated methods from Model type - `PR 270`_
- Remove deprecated parameters from ``bravado_core.spec_flattening.flattened_spec`` - `PR 269`_
- Ensure that models in ``/definitions`` of referenced files are discovered - `PR 273`_

.. warning::
  This release contains breaking changes!
The signature of ``bravado_core.spec_flattening.flattened_spec`` has been updated.
   The following methods have been removed from the public interface: ``bravado_core.model.tag_models``, ``bravado_core.model.bless_models``, ``bravado_core.model.collect_models`` and ``bravado_core.spec.post_process_spec``.

-------------------
- Fix marshalling and unmarshalling of optional body parameters. `PR 268`_

-------------------
- Add support for Content-Disposition filename - `PR 262`_. Thanks elmirjagudin for your contribution!
- Improve specs flattening and dereferencing in case of relative references - `PR 263`_