corrected the demo code to use the new API where `.set()` only *reduces* the current progress value when the `.set()` is *forced*: `.set(n, msg, forced=true)`
corrected the demo code to use the new API where `.set()` only *reduces* the current progress value when the `.set()` is *forced*: `.set(n, msg, forced=true)`

GerHobbelt/nprogress,GerHobbelt/nprogress,GerHobbelt/nprogress