add object.merge(that)
add PT.isErr(value)
bugfix and extend in pastry.date.js
v0.0.54 PT.isDef(null) === false
v0.0.6
ajax function
add pastry.form.js
update scripts that dealing with docs
add pastry.ui.js and pastry.ui.tabs.js
add classList shim, dataset shim, dom and css extends
bugfix in pastry.environment.js