* Add unit test reproducing the bug
* Improve unit test
* Apply market hours database updates to instance
Make sure entries are updated instead of overridden so that consumers holding the mhdb can pick up the changes
* Improved unit tests
* Update data folder MHDB entries instead of overriding instance
* Optionally reset custom mhdb entries on reset
* Simplify mhdb reset in live trading
Cleanup and minor fixes
* Ensure symbol properties database updates are picked up by consumers
Update SPDB entries instead of overriding them, just like for the MHDB so that consumers pick up updates after refresh
* Fix for symbol properties update thread safety
* Minor improvements and cleanup
* Mhdb and spdb update logic simplification
* Move "force exchange always open" logic to mhdb
* Simplify symbol properties holder and updates
* Refactor security databases to use a common base class
Introduce BaseSecurityDatabase<T, TEntry> to encapsulate common functionality for MarketHoursDatabase and SymbolPropertiesDatabase.
* Cleanup
Jhonathan Abreu
8149c291fc