2.0.5

switch to null safety (#6696)
add Object APIs (pack/unpack) (#6682, #6723, #6846)
add custom builder buffer allocator support (#6711)
add Builder.size() - finished buffer size (#6403)
make writeString() argument non-nullable (#6737)
make tables fixed size (expect the number of fields when creating) (#6735)
make table deduplication optional (param deduplicateTables) (#6734)
change Builder.reset() to reuse an existing buffer (#6661)
change table building to assert() instead of exceptions (#6754)
optimize writeString() for ASCII (param asciiOptimization) (#6736)
change StringReader to make ASCII optimization optional (param asciiOptimization) (#6758)
change [byte] and [ubyte] representation to dart:typed_data Int8List and Uint8List (#6839)
rename lowFinish() to buffer getter (#6712)
fix Builder._writeString() - always write trailing zero byte (#6390)
fix Builder.reset() - clear vTables (#6386)
make sure added padding is zeroed, same as in C++ (#6716)
many performance improvements (#6755)

1.9.2