Merge pull request #9 from snoyberg/master

Allow transformers 0.2
Don't strip space after open tag. fixed #10.
Add HTML entity decoding
Streaming decodeEntities
Add comprehensive entity test-cases
Remove redundant constraints
Leave invalid entities unencoded, updated tests
Merge pull request #11 from chrisdone/entity_decoding

Entity decoding in Text tokens
fix redundant import warning
boost version
conduit 1.1 support