Add Polygon v2 data endpoints

In this release, support has been added for the following Polygon endpoints:

Historic Trades v2: https://polygon.io/docs/#!/Stocks--Equities/get_v2_ticks_stocks_trades_ticker_date
Historic Quotes v2: https://polygon.io/docs/#!/Stocks--Equities/get_v2_ticks_stocks_nbbo_ticker_date

The methods using the v1 endpoints have been marked as deprecated and will be removed from the library in a future release, as Polygon intends to remove them from the API.