Formish

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Hopefully we're over the backward incompatible api changes.

* added ``sortable`` option to sequence widget
* renamed the default form id back to 'form' (it temporarily got set as
'formish'). js and css might need changing in your projects..
* Added ReCAPTCHA widget and enhanced the testish self documenting site
* big introduction page to docs

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* added a TextArea csv example and cleaned up fileresource handlers

BUG FIX: resizing when only with or height given was not working

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* added a SelectWithOther choice and enhanced unit and func test capabilities
in testish

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BUG FIX: Fixed various problems with File uploads.

* added a default file acccessor that uses python tempfile with a 'store-' file
prefix.

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BUG FIX: Fixed bug when using multi part widgets (e.g. Date Parts) inside a
sequence. Added example test case.

* changes to handle new schemaish Invalid exception format
* added a contains-error class to container classes that do.

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* Add a granular template rendering system (have a look at
http://ish.io:8891/CustomisedFormLayout)