save 0.2.0+2

"A flutter state management library with `State`, `Action`, `View`, `Effect`"

0.2.0+2

• REFACTOR: rename classes, extensions, fields.
• FIX: wrong order of effect clear.

0.2.0+1

• REFACTOR: rename hypen to save, add tests for action.

0.2.0

Note: This release has breaking changes.

• BREAKING REFACTOR: rename state and action.

0.1.0+1

• REFACTOR: use save_test.

0.1.0

• Migrated from hypen package