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
bugfix in classlist shim
release v0.0.92