flock 0.0.4

Coordinate Flutter widgets' states with event sourcing.

[0.0.1] - 2019/1/8

• Initial release.

[0.0.2] - 2019/1/8

• Update readme.

[0.0.3] - 2019/1/8

• Add basic documents to public interface.

[0.0.4] - 2019/1/9

• Rename EventStore to Store
• Add Store#get as a shorthand of Store#projectWith