Fix jedi 0.11 – be optimistic. Instead of not trying Jedi completion if Jedi parsing of wether we are in a string fails assume that we should alway try jedi, and do not only if jedi manage to prove we are currently in a string. This should give some false positive (like triggering jedi in some unfinished strings), but no false negative – like for example with Jedi 0.11 which is just out. In the end we should do a proper fix; but I'd like to get that soon as otherwise Jedi is quasi deactivated when version 0.11 is installed (released a few days ago).