title: Safe to delete .PyCharmCE2017.1 and .PyCharmCE2017.2?
body: <p>Pycharm 2017.3 just came out so I was wondering if it would be safe to delete .PyCharmCE2017.2 (as well as .PyCharmCE2017.1).  Are there any important files that I need from those or are they all transferred to the newly installed .PyCharmCE2017.3 file?</p>