hack-handler-happstack-2009.4.52: changelog.md

2009.4.52
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### Fix

* Compatible with hack 4.52

2009.4.51.1
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### Feature

* configurable port
* specify serverName statically for now

### Fix

* remove ? in query string
* do not need hack-contrib to build

2009.4.51
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### Fix

* translate lowercase header to normal header for env
* don't get server name, that cause a crash

2009.4.50
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Init