Changelog for encoding-0.4.1

Changes from 0.3 to 0.4 ----------------------- * A new, strict UTF-8 decoder * Minor bugs fixed in UTF-16 and BootString * Test cases for UTF-8, UTF-16 and BootString * Added KOI8U encoding Changes from 0.2 to 0.3 ----------------------- * Converted to new cabal interface * Support for GHC 6.8 * Support for new bytestring interface Changes from 0.1 to 0.2 ----------------------- * Implemented GB18030 encoding