Stop the particle function(s) when not on screen?

[kenji-1996]

The ability to disable the particles when they are not on-screen.
I believe this would help VincentGarreau/particles.js#158

[cjwilsontech]

This appears to have been fixed when compiling the latest source. However, the npm version has not yet been updated with the fixed version. @ryuKKu-

[durham989]

@ryuKKu- just commenting here as a reminder to update the npm version based on the most recent source. Experiencing performance issues when using version 1.0.4

[seanquijote]

@ryuKKu- any update on this?