Changelog for text-

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* Added support for Unicode 6.3.0 to case conversion functions

* New function toTitle converts words in a string to title case

* New functions peekCStringLen and withCStringLen simplify
  interoperability with C functionns

* Added support for decoding UTF-8 in stream-friendly fashion

* Fixed a bug in mapAccumL

* Added trusted Haskell support

* Removed support for GHC 6.10 (released in 2008) and older