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- Add DataExtractedEvent, which is thrown after data and errors are extracted
from widgets. Fixes https://github.com/zopefoundation/z3c.form/pull/18
- Remove spaces at start and end of text field values.
- Explicitly hide span in ``orderedselect_input.pt``. This only
contains hidden inputs, but Internet Explorer 10 was showing them
anyway. Fixes https://github.com/zopefoundation/z3c.form/issues/19