add add_to_transaction
add tests for add_to_transaction
change name to transaction_name to avoid shadowing
change name of TestCase
change func to a class attr
add tests for add_to_transaction interface
add rollback_functions dict to Router
change rollback_handler to rollback
conditionally add rollback handler
add tests for add_rollback_function
test return value of add_to_transaction
rename add_to_transaction to add_transaction
test return value of add_rollback_function
fix rollback_handler > rollback
add tests for adding rollback function from transaction