0.2.0

• fix typo in image opset
• tweak file opset: update i18n and add min-size in size-limit op
• add paths and resolve api
• add experimental conditor module
• upgrade dependencies
• fix bug: child isn't reinitialized in manager.order api
• support export api in manager and widget
• support mod.value api
• explicitly define the purpose of fromSource option in value api
• widget.validate: lazy get of widget content to improve performance
• widget.value: equality check in widget.validate use internal value.
• add form.value.toString api for convert generic widget value to string
• add additional utils api for merging exported json