Update to 0.4.9

changes:
0.4.9
 - create/close internal state
Update to 1.0.8

changes:
1.0.8
 - sourceHandleRange
 - Better chunk size
 - Add associativity tests from @DanBurton
 - Add promptness test
 - A bit more Text functionality
 - foldLines
 - foldMapM
Update to 0.8.5.1

changes:
0.8.5.1
 - Get rid of tags for #31
 - Round tripping of special strings #31
     ( #31 => https://github.com/snoyberg/yaml/issues/31 )