TF2 Trade Helper extension steam group

Hello!
I've updated site so you can download the newest version of my extension.
ser646.github.io

New features:

-Added amount input on BP.tf classified list, so now you can trade multiple items with 2 clicks:
1. Input an amount of item you want to buy, sell and click trade offer.
2.Extension will automatically add your items and also your partners items!
So if you input that you want to buy i.e 3 keys which cost 33.44, then when you click trade offer adon will add 3*33.44ref in your trade window and 3k in partern's trade window. It works with key prices too!
3. Accept the trade.

-rewrote the code and now adding items and removing them works much faster. Removing items takes longer time, so if you are removing from trade i.e 500 items there is a 6 sec window freeze. Just don't worry and wait! (BTW Who would remove so many items at once xD)

-improved add item amount input element

-made error massage for those who didn't set up steamid or apikey in etension options

Also i have updated firefox entesion, so now you can use it on mobile too!!

Btw. If popup window doesn't show you info about your inv , just refresh it. It's steam's api error - you can check it in console (F12)

I'm looking forward for your ideas and feedback!