[evol] Task-based client DSL §6 (added botnet 'ask' subtask)
[fix] DSL: correct mistake for outgoing notifications
[evol] DSL: partial implementation for wait_notification with callback (unfinished, but kept as example)
[evol] client DSL: reorganized notification code and move 'acts' (currently sending notifies) in the _start_dsl call
[evol] preliminary work for Conversation synchronization in DSL (action callbacks had to be moved from Protocol to ConversationThread to be able to check idle with the new locks, needed to process notifications without falling idle)
[fix] corrected silly mistakes in Botnet DSL
[evol] created a DSL for client-side calls (several conditions (calls only at the moment) can be joined together in order to exploit parallel tasks via asynchronous calls)