FinanceToolkit v1.3.9

This release mainly introduces fixes to existing functionality, most importantly the calculation of trailing ratios. The timing of the trailing ratios was a bit off as it took to the sum of the periods after calculation instead of before. This has now been fixed.

If you didn't know, you can calculate trailing ratios (e.g. revenue TTM, price-to-earnings TTM) and much more by using the trailing parameter. This parameter represents the amount of periods you wish to combine to calculate the trailing ratio, e.g. if you use quarterly=True in the Toolkit initialisation and then set trailing=4 for any ratio, you are able to calculate any TTM ratio.

The same can be done for a financial statement.

I also noticed that the days used for calculating Efficiency Ratios was set to 365 by default. This is fine for annual calculations but for quarterly calculations it should be divided by 4. This is now done automatically.