* Add interface to allow custom security entries for MHDB and SPD
* Simplify adding custom Properties and MarketHours via AddData overload
* Refactor
* Remove AddData and GetDatabaseSymbolKey overloads
* Add unit tests
* Remove AddData overload, for real.
* Nit changes
* Set CustomDataBitcoinAlgorithm back to original
* Add Python and C# Regression
* nit typo
* nit typo actual
* Reset symbol property to default
* Reflect last change to py regression
* Revert "Remove AddData overload, for real."
This reverts commit dc877495c079f17dda1695494ffe36886b1c117e.
* Implement AddData solution fully
* Function nit fix
* Address review
* nit - remove param comment
* Address review
Colton Sellers