Marshmallow

+++++++++++++++++++

Bug fixes:

- Remove spurious warning about implicit collection handling
(:issue:`998`). Thanks :user:`lalvarezguillen` for reporting.

+++++++++++++++++++

Bug fixes:

- Allow username without password in basic auth part of the url in
``fields.Url`` (:pr:`982`). Thanks user:`alefnula` for the PR.

Other changes:

- Drop support for Python 3.3 (:pr:`987`).

+++++++++++++++++++

Bug fixes:

- Prevent ``TypeError`` when a non-collection is passed to a ``Schema`` with ``many=True``.
Instead, raise ``ValidationError`` with ``{'_schema': ['Invalid input type.']}`` (:issue:`906`).
- Fix ``root`` attribute for nested container fields on list
on inheriting schemas (:issue:`956`). Thanks :user:`bmcbu`
for reporting.

These fixes were backported from 3.0.0b15 and 3.0.0b16.

+++++++++++++++++++

Bug fixes:

- Handle empty SQLAlchemy lazy lists gracefully when dumping (:issue:`948`).
Thanks :user:`vke-code` for the catch and :user:`YuriHeupa` for the patch.

+++++++++++++++++++

Bug fixes:

- Respect ``load_from`` when reporting errors for ``validates('field_name')``
(:issue:`748`). Thanks :user:`m-novikov` for the catch and patch.

+++++++++++++++++++

Bug fixes:

- Fix passing ``only`` as a string to ``nested`` when the passed field
defines ``dump_to`` (:issue:`800`, :issue:`822`). Thanks
:user:`deckar01` for the catch and patch.