Firefox 20 is released. Can anyone tell what is new in that. I am using a older version due to a addon. It does not work on any new edition. I just do not want to upgrade, because there can be more issue if I install it directly. All my old adds will be wiped out and will not work properly. I need some help to find out the exact features of the new browser with addon benefits. Is it possible to install more than one version of Firefox on a single pc.
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