tiny_storage 1.3.0

This is a simple key-value store based on JSON file. Parallel processing of file I/O using `Isolate`.

1.3.0

• Added 'close' to close the current file.
• Added 'errorCallback' to get errors.

1.2.0

• Added 'inProgress' to indicate whether the process is in progress or not.
• Added 'waitUntilIdle' to wait until idle.

1.1.0

• Added 'union' to run on the same thread.

1.0.4

• Fixed data updates to Map and List.

1.0.3

• Avoided unnecessary saving when values are the same.

1.0.2

• Updated isoworker to fix a bug that sometimes files are not saved when exiting.

1.0.1

• Avoid error when clear is called multiple times

1.0.0+1

• Update README.

1.0.0

• Initial version.