Add support for a generic KeyValueStore interface.

2.1.0

format code (#29)

Restore `BehaviorSubject` behavior of `HydratedSubject`

v2.0.1 - restore BehaviorSubject behavior for `HydratedSubject` (#25)

* Use BehaviorSubject internally

* Clean up test messages, don't double-check listener behavior

* Use expanded test reporter for CI (better logging)

* Rename typing_utils.dart -> type_utils.dart

* Add documentation note that the class behaves as `BehaviorSubject`.

* Readability improvements

* Remove unused completer, reformat

* Fix value setter

* Remove unused SubjectValueWrapper class

* Update doc string

* Update CHANGELOG.md, fix typo, bump version to 2.0.1

Null-safety support.

- v 2.0.0

- updated changelog
- dart format all files

1.2.5+2: Maintenance release

• Dependencies update

Maintenance release

• Fixed example warning with dummy method
• Fixed pubspec.yaml conventions

Maintenance release

• Bump rx_dart version to ^0.22.0
• This breaks compatibility with Dart SDK < 2.6
• Simple CI added to repository
• README.md updated