ctx 0.0.4

Immutable context for carrying data through an application.

0.0.4

• Fix memory leak when creating derived contexts via withCancel() or withTimeout() from uncancelable parent contexts (e.g., Context.empty()).

0.0.3

• Added withCancel to support context cancellation.
• Added withoutCancel to detach context cancellation from parent.
• Added withTimeout and withDeadline for automatic time-based cancellation.

0.0.2

• Changed context key type from String to Object.

0.0.1

• Initial version.