JSON parsing bugfix
The changes in release 0.5.6 were meant to be backwards compatible. Unfortunately they were not - 0.5.5 JSON could not be parsed with 0.5.6. This release fixes that problem.
Note that 0.5.5 cannot parse the JSON created by 0.5.6 or 0.5.7. This is easily fixed in your own application by configuring the Jackson ObjectMapper as in #76, or of course by upgrading to 0.5.7.
Version 0.5.7 is much less strict in when it requires and can accept the '@type' parameter, so this problem should not reoccur in future versions
Sorry for any inconvenience causes by this problem.