Refactor internals of config (2)

  - Added not_before and not_after keys to hold available versions.
  - Simplified Conf.pm a bit.
  - Parameter "tracking" in sympa.conf/robot.conf will be forced renaming.

Drop a dependency Socket6 (#1211)

Data source synchronization performance improvement (#1186)

  - Add Sympa::DataSource::is_external().
  - use Sympa::List::get_exclusion(). As a side work
    Sympa::List::is_member_excluded() was deprecated.

Fix: Persistency (automatic reconnect) feature of Sympa::Database should be disabled during transaction.

WWSympa: Update jQuery to 3.6.0 (#1204)

custom_robot_parameter parameter was broken

typo in mhonarc_rc.tt2

Injected on commit 5b5fd551 and affects 6.2.57b.1 to 6.2.64.

* Additions for 6.2.64

Some more changes to ldidry/1174 followup

Make distribution_ttl and inclusion_notification_feature site-wide

S/MIME: subjectAltName in certificate couldn't be parsed properly (#1196)

Use recent version of Crypt::OpenSSL::X509 (1.808 or later) to make subjectAltName extension in S/MIME certificates be parsed properly (#1196)

Add create_list.closed scenario.

delete_list_member() failed removing subscribers' pictures