changeMonth(x) will display wrong date if the x >12

[max-yilang]

Expected Behavior

Expect the calendar to display correct date and year.

Current Behavior

The calendar display correct month however the year is incorrect.

Steps to Reproduce (for bugs)

1.use changeMonth(x) on any flatpickr instance
2.when x > 12, both the month and the year increased.For example when x = 14, the calendar display March 2020 instead of March 2018.

Your Environment

• Version used:v2.3.4
• Browser Name and version:Chrome and Safari
• Operating System and version (desktop or mobile):Mac OS El Capitan and iOS 10

[max-yilang]

Just found a temporary solution if you increase month by x

for(let i = 0;i<x;i++){
                flatpicker.changeMonth(1);
            }