FlashMQ 1.24.0 released

Version 1.24.0 is mostly a maintenance release; no big new features added. Aside from some internal refactoring, there is:

Same fixes from 1.23.1 and 1.23.3 releases.
Add config option persistence_data_to_save to give more control over which data is saved.
Fix showing ‘server shutting down’ in logs whether FlashMQ is client or server. It now properly only mentions ‘server’ when it’s the server shutting down, local or remote.
Fix marking any non-worker thread as ‘main’ in logs. Now the actual thread name is shown, also for threads created by the plugin.
Reduce locking around client stores in even loops.
Don’t render ‘subscribe’ log lines when subscriptions are not configured to be logged. This saves overhead.
Database files in storage_dir are now always created with strict permissions.