Dependent value updates (lightweight timestamping, dynamic defaults)

[Yaw Anokwa]

• JavaRosa: getodk/javarosa#227
• XLSForm
• pyxform

[Hélène Martin]

Part of this still needs a spec. We have support for dynamic defaults on form load but we don't have anything in XLSForm that lets us access the xforms-value-changed event.

[Hélène Martin]

Pending XLSForm Online release and docs merge.

[Hélène Martin]

http://xlsform.org/en/#trigger
http://xlsform.org/en/#default