A simple utility for concatting KVIrc log files and removing unimportant entries like people joining/leaving channel.
Log files must be in text format: using these settings https://github.com/kvirc/KVIrc/wiki/FAQ#i-opened-my-logs-with-a-text-editor-and-they-look-like-i-dont-even-know-what-they-look-like-whats-up or exported via Tools -> Browse Log Files -> right click -> Export.