Disable the "do no cache javascript" parameter ?v=173

-- HikaShop version -- : 3.5.1
-- HikaMarket version -- : 2.1.1
-- Joomla version -- : 3.8.x

We are on the process to make my site fast and optimized. We managed to fix and improve a lot of things and now we are stalled on something GTMetrix is complaining about:

Resources with a "?" in the URL are not cached by some proxy caching servers. Remove the query string and encode the parameters into the URL for the following resources:

/media/com_hikamarket/css/frontend_custom.css?v=173
/media/com_hikamarket/css/otree.css?v=173
/media/com_hikamarket/js/hikamarket.js?v=173
/media/com_hikamarket/js/otree.js?v=173
/media/com_hikashop/css/frontend_custom.css?t=1468838255
/media/com_hikashop/css/hikashop.css?v=301
/media/com_hikashop/js/hikashop.js?v=301


I don't know how to get rid of this ?v=173 and ?v=301 parameter that according to GTMetrix is not allowing to cache those files by the browser.

Of course there might be a powerful reason for those files to be non-cached, I guess is to ensure updates always work right.

But now we are in a stable release of our site and we need to speed it up, we understand that when updating HikaComponents we'll need to clean caches to ensure good working.

QUESTION 1:

How can we avoid this parametrization of the script call so the site runs on browser cached .js

QUESTION 2:

Is there some of this files that you would encourage to keep them uncacheable?



Thank you.

I'll move this to HikaShop then.