Version 1.5.1

• Add SetDefaultManager and GetDefaultManager function.

Version 1.5.0

Add Registered() method, determines whether the given runtime environment is already registered.

Version 1.4.0

• Add Manager.Is() and Manager.In() method.
• Add Manager.UnListen() and Manager.UnListenAll() method.

Version 1.3.0

• Add NewEmpty(): creates and returns an empty runtime environment manager.

Version 1.2.0

• Add runtime environment manager.
• Supports runtime environment listener.

Version 1.1.0

• Add lock support for the current runtime environment.
• Use read-write locks to protect read-write operations in the current runtime environment.

First Release

(〃'▽'〃) All expected features are implemented.