ai_progress 2.0.0

A new multiple style progress include of circular、linear and step style progress indicator.

[2.0.0]

• null safety.

[1.0.0] - Stable

• adapter: flutter version = v1.22
• upgrade: iOS development target from 8.0 to 9.0

[0.2.1] - Stable

• Update: example document and resource

[0.2.0-pre] - pre

• Add: 'clipBehavior: Clip.antiAlias,' compile 'v0.2.0'

[0.2.0] - Stable

• Stable

[0.1.9] - Add

• Add: Step progress round cap style

[0.1.3] - Update

• Update: document resource

[0.1.2] - Dashboard

• Add: Dashboard progress

[0.1.1] - Document

• config document

[0.1.0] - Stable

• stable version

[0.0.2] - Document

• add document

[0.0.1] - initial

• initial release.