[transaction] handle ``mode`` default value in Transaction
The transaction mode is now explicitly passed at creation time and always read
from the Transaction object.
Note that there is a slight behavior change. The transaction mode is now set at
the creation of the transaction. Changes made to the default value have no
longer any effect on existing transaction.
[MESSAGES CONTROL]
disable-msg = C0301
[VARIABLES]
# Enable / disable this checker
enable-variables = yes
additional-builtins = _, display_name
[BASIC]
required-attributes=
attr-rgx = (w|[a-z_][a-z0-9_]{2,30})
variable-rgx = (w|[a-z_][a-z0-9_]{2,30})$
argument-rgx = (w|[a-z_][a-z0-9_]{2,30})$
[TYPECHECK]
generated-members=debug,info,notice,warning,error,critical,exception