* RunManagerRecord class has a new attribute market. Market enum is imported.
* row_to_runmanager function considers market column
* add_run_manager_record and update_run_manager_record functions are changed. fetch_all_markets_in_run_manager is new.
* new Market enumeration class is defined
* market_value used for job scheduling. start and stop functions have modifications of market parameter input
* new is_market_day function + modifications of get_todays_market_times function
* market attribute set default to US
* row_to_runmanager function has no string formatter for market attribute
* add_run_manager_record function adn update_run_manager_record function update the DB column market based on record.market data
* start_runman_record and stop_runman_record have got no market parameter
* get_todays_market_times function is changed
* default value for market atribute is Market.US
* update_run_manager_record function has no if condition for market key
* market_value deleted, used enumaration value Market.US instead of string US
* get_todays_market_times has a new if condition for Market.CRYPTO
* update includes market column in the run_manager table
* market attribute in Run Manager record has value given by enumeration as Market.US
* documentation of changes made in the branch
* remove README_feature_market.md
* back to original state
* Delete README_feature_market.md
* _start_runman_record has an additional else condition
* is_market_day renamed to is_US_market_day
* transferables column added into runner_header table
