Merge branch 'release/0.2.6'

* release/0.2.6:
  Bump version.
Bump version
Use html5 input types for date and time in DateTimeInputWidget.
Make sure seconds make it into time.
Merge pull request #51 from chrisrossi/datetime_html5

Use html5 input types for date and time in DateTimeInputWidget.
Respect the autocomplete attribute for forms

deform allows creating a form as follows:
    >>> class MySchema(colander.Schema):
    ...     foo = colander.SchemaNode(colander.String())
    ...
    >>>
    >>> form = deform.Form(MySchema(), autocomplete=False)

The generated form should have a 'autocomplete="off"' attribute set as a
result, but it was ignored by the form.pt template.

This change is inspired by the code of the form.pt template in deform
itself.
Test across supported pythons with tox.
Unused import.
Unused import.
Py3k:  avoid 'basestring'.
Coverage
Coverage for d.w.DateTimeInputWidget.
Coverage for d.w.ChosenOptGroupWidget.
Coverage for d.w.ChosenMultipleWidget.
Wrap long lines.
Don't need separate cover part.
Coverage under Python2.
Merge pull request #55 from tseaver/py3

Py3k compatibility + test coverage
Add entries in changelog.  Release.
Version increment