- dynamic bantime: introduces new action-tag `<bantime>` corresponds to the current ban-time of the ticket;
Note: because it is dynamic, it should be normally removed from `jail.conf` (resp. `jail.local`).
- introduced new action command `actionprolong`, used for prolongation of the timeout (ban-time of the ticket);
- removed default `timeout` from `actionstart` of several actions;
- faster and safer function escapeTag (replacement at once in one run, '\n' and '\r' escaped also);
- introduced "conditional" sections, see for example `[Init?family=inet6]`;
- iptables-common and other iptables config(s) made IPv6 capable;
- several small code optimizations;
* all test cases passed (py3.x compatible);