execution_queue 1.2.0

Transaction like execution queue to synchronize asynchronous jobs.

[0.0.1] - 2018-06-25

• Initial release

[0.0.2] - 2018-06-26

• Remove flutter dependency

[0.0.3] - 2018-06-30

• code style

[1.0.3] - 2020-07-16

• better error handling marioreggiori/objectdb#41

[1.1.0] - 2020-12-08

• Update pubspec.yaml

[1.1.0+1] - 2020-12-08

• Add example
• Add dartdoc comments

[1.2.0] - 2021-03-12

• make it null-safe