Combine Operators1.1.4

Combine Operators wants to help you improve your knowledge with Combine framework.

- Interact directly with underlying publisher instances through an intuitive UI.
- Follow the whole journey of publishers, when they get subscriptions, receive demands, cancelled or completed.
- Get familiar with operator concepts or just refresh your knowledge.
- Observe through helpful animations how subjects and operators behave with different input values.
- Pseudo codes for each operator.
Combine Operators V1.1.4更新日志：
1.1.4:
- Minor bug fixes.

1.1:
- Added pseudo code for operator animations.
- Added animations for observing publisher lifecycle.
- Added more operators including switchToLatest.
- Added reset subscriptions button.
- Added error handling operators.