modify index
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# On branch master
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# Changes to be committed:
#	modified:   lib/array/index.js
#	modified:   lib/env/index.js
#	modified:   lib/file/index.js
#	modified:   lib/index.js
#	modified:   lib/log/index.js
#	modified:   lib/object/index.js
#	modified:   lib/string/index.js
#	modified:   task/index.js
#	modified:   task/worker/index.js
#