Issues with progress observing

[alina-p-k]

Without using publish method we get several problems:

1. Method onTimerProgressChange will cause infinite calling in completion with time 0.0
2. Method onTimerActivityChange will call completion only once on start

try? MTimer
            .createNewInstance()
            // .publish(every: time) { _ in } // i don't use it 
            .onTimerProgressChange { print($0) }  // causes a loop 
            .onTimerActivityChange { print($0) } // will be called once on start 
            .start(from: .zero, to: time)