* chore: make flatc artifacts from CI executable
* chore: prepare dart 2.0.0 release
* refactor: update description in pubspec.yaml to make pub.dev happy
"The package description is too long.
Search engines display only the first part of the description. Try to keep the value of the description field in your package's pubspec.yaml file between 60 and 180 characters."
* Dart - change Builder "lowFinish()" to "buffer" and "finish()" to not void return
Aligning the API with other languages, e.g. c++ and allowing custom use-cases to avoid creating a Uint8List
* Dart - change builder.buffer to check that finish() was already called
* Dart - builder - move !finished assertion to _prepare() which is run from all other functions
* dart test scripts - generate with `--gen-object-api`
* Dart object API, pack and unpack methods (WIP)
* Dart flatc - extract Builder code to separate functions to reuse it in Pack()
* Dart flatc - use builder field-building implementation in pack()
* Dart flatc - add pack() as an intance method of the "T" class
* Dart object API - make inner fields unpacked as well
* Dart object API - use pack() when collecting field offsets
* Dart object API - use packOnce() for fields that are structs or vectors of structs
* Dart object API - remove obsolete union support TODO
* Dart object API - minor review changes, test and fixes
* Dart object API - revert packOnce() - not supported by other object API implementations
* Dart object API - update docs
* update dart generated code in tests/ to fix CI failure on ./scripts/check-generated-code.sh
* Dart flatc - fix compilation for old MSVC and c++0x
Ivan Dlugos