loli-2009.7.2: changelog.md

2009.7.2
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### Features

* before / after filter
* On the fly router switcher

### Fix

* safari display weird header

2009.6.29
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### Features

* Initial hackage release

2009.6.27
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### Features

* add template
* add local binding
* env and response are in reader and state monad respectively

2009.6.26
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### Features

* add route

2009.6.25
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Init