Add support for ALL key statistics data

[DebugMeIfYouCan]

It's related to #18 as most of the work has been done already, but there are some main key statistics data that are missing, such as total cash, total debt or levered free cash flow...etc How could we get access to all those data?

See sample here: https://finance.yahoo.com/quote/ABBV/key-statistics?p=ABBV

It would be ideal if all those data could be available :) Happy to help where I can. Thanks!

[DebugMeIfYouCan]

@JECSand I'll ask someone to add those missing data to the project as it seems possible. Would you consider the pull request if I make those enhancements available? Thanks

[gargi-chugh1011]

revenueQuarterlyGrowth values in get_key_statistics_data() show up as None for all tickers. I checked some against the Yahoo Finance website and they are not None. Attached an example

[JECSand]

@DebugMeIfYouCan

I would absolutely consider a pull request which added that missing data.

I have been very busy these last few months, but will try to resume maintaining this project in the next few weeks.

[flipdazed]

Have a look at https://github.com/JECSand/yahoofinancials/pull/47 this adds support for Financial Data

In [58]: from yahoofinancials import YahooFinancials
    ...: 
    ...: parser = YahooFinancials("MSFT")
    ...: 
    ...: 

In [59]: parser.get_financial_data()
Out[59]: 
{'MSFT': {'ebitdaMargins': 0.44236,
  'profitMargins': 0.31656,
  'grossMargins': 0.66559,
  'operatingCashflow': 52345999360,
  'revenueGrowth': 0.137,
  'operatingMargins': 0.35197,
  'ebitda': 57423998976,
  'targetLowPrice': 133,
  'recommendationKey': 'buy',
  'grossProfits': 82933000000,
  'freeCashflow': 33811625984,
  'targetMedianPrice': 160,
  'currentPrice': 149.59,
  'earningsGrowth': 0.211,
  'currentRatio': 2.854,
  'returnOnAssets': 0.10644,
  'numberOfAnalystOpinions': 32,
  'targetMeanPrice': 160.16,
  'debtToEquity': 80.68,
  'returnOnEquity': 0.428,
  'targetHighPrice': 170,
  'totalCash': 136608997376,
  'totalDebt': 85570002944,
  'totalRevenue': 129814003712,
  'totalCashPerShare': 17.907,
  'financialCurrency': 'USD',
  'maxAge': 86400,
  'revenuePerShare': 16.94,
  'quickRatio': 2.679,
  'recommendationMean': 1.6}}