dateRange: true on change is triggered twice

[itajackass]

Prerequisites

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• I have validated my setup against the latest version on StackBlitz.
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Describe the issue

Using dateRange, the change.td events trigger different times.

I expeted that using dateRange: true is set, change.td event is fired only on both start and end date are selected... but actually change.td is fired on every press of a date (fired first time when start is selected, and fired another one when end is selected). Also changing dates manually (without calendar) it fires 2 times...
Using hide.td events reduces the "bug", but manual change of dates (instead by calendar) is not triggered...

You can see my example: first picker is bad..... in second picker i've implemented all checks to prevent false change.td events.

https://stackblitz.com/edit/tempus-dominus-v6-simple-setup-kc1hxu?file=index.js,index.html

StackBlitz fork

https://stackblitz.com/edit/tempus-dominus-v6-simple-setup-kc1hxu?file=index.js,index.html

What operating system(s) are you seeing the problem on?

Windows

What browser(s) are you seeing the problem on?

Firefox

What version of are you using? You can find this information from the sample StackBlitz.

latest

What your browser's locale? You can find this information from the sample StackBlitz.

it

[Eonasdan]

As I'm sure you noticed, since you checked the box indicating that you did on all the issues you've opened, I'm not working on the project anymore for free.

The source is available. If you want to contribute a PR to help resolve bugs you are facing, I'm happy to review them. Otherwise, there are various ways that you can get paid support. Thanks for your interest