Release v2.1.0

What's Changed

• feat(taskgroup): improve task group functionality by @alitto in #81
  • Added a new method to the pool to create a task group associated with a context (pool.NewGroupContext(ctx))
  • Added new methods to task groups:
    • group.Done(): returns a channel that is closed when all tasks in the group finish or the first error is returned.
    • group.Stop(): stops the task group. Queued tasks will be discarded but running tasks will complete their execution.
  • Added a new example showcasing the new pool.NewGroupContext(ctx) method.

Full Changelog: v2.0.4...v2.1.0