Access running state of Timer

[etiennebeaulac]

There are certain use cases where I would like to be able to check if a Timer is currently running. The class already has the member variable m_running holding that particular state, it would be nice to have a public method returning its value.

If you think this is a good idea, I could proceed to do a PR. Thanks !

[PeterJohnson]

Seems like a reasonable thing to add. Naming wise, were you thinking isRunning()?

[etiennebeaulac]

This would have been my guess, yes, since this is already what is used internally.