版本：
文件：
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https://cdn.bootcdn.net/ajax/libs/bootstrap-tokenfield/0.12.0/bootstrap-tokenfield.js
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https://cdn.bootcdn.net/ajax/libs/bootstrap-tokenfield/0.12.0/bootstrap-tokenfield.min.js
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https://cdn.bootcdn.net/ajax/libs/bootstrap-tokenfield/0.12.0/css/bootstrap-tokenfield.css
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https://cdn.bootcdn.net/ajax/libs/bootstrap-tokenfield/0.12.0/css/bootstrap-tokenfield.min.css
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https://cdn.bootcdn.net/ajax/libs/bootstrap-tokenfield/0.12.0/css/tokenfield-typeahead.css
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https://cdn.bootcdn.net/ajax/libs/bootstrap-tokenfield/0.12.0/css/tokenfield-typeahead.min.css