Regenerate with re2c 0.13.6
Add ext/json tests
Use jsonSerialize for JsondSerializable interface
Set correct prefix for jsond constants
Fix surrogate pair conv order
Change json to jsond in all tests
Add CR to WS
Init value and remove return macros in scanner
Use unsigned char as YYCTYPE
Fix key type for assoc array and object props
Identify state mismatch error
Correctly initialize parser depth
Replace object handle value with %d
Use init INIT_PZVAL_COPY for copying result
Fix compatibility issues
Fix compiler warnings for scanner
fix for ptrdiff_t on older php versions