IsPlaying information

Please add a **funtion** or **property** that allow us to know if a particle is **playing** or **not**. Actually there is no such method (only isPaused but is most of time useless)

When I try to do:

`myParticle.particles.Exists(x => x.isPlaying)`

it's return always **false**, even if the particles still playing

so...can you help me?

Thanks