FinanceToolkit v1.3.6

This version introduces ISIN support. If you submit an ISIN, it will find the relevant symbol and use that instead. It will also mention to what symbol it made the conversion so it is clear what ticker to look at. I've also added some dependencies, mostly a clean-up (I was struggling with getting SciPy to work, now this is built in with Pandas). Next to that, I've added the Finance Database as a dependency as in the future the Finance Toolkit will feature functionality from this database.