2009.4.52
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### Feature
* request / response helper, able to get params / inputs data
### Fix
* uniform utf8 interface for string
* compatible with hack 4.52
2009.4.51.1
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### Fix
* enforce unicode asap policy
* rename ContnetSize to ContentLenght, since it was a typo
2009.4.51
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### Feature
* config middleware
### Fix
* require MPS 4.50, hack 4.50
2009.4.50
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### Feature
* more useful middlewares ported from rack-contrib
### Fix
* name change, show_status_message
2009.4.30
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### Feature
Init