The new version is out!

You can now edit the description of an already created Quest via Plugin Command

Also you can use Plugin Command to edit the font size of the title

Important compatibility note from 1.0 to 1.1: To correctly use the Edit Description command by ID quest must be created with an ID above 0. If any quest before 1.1 was created with Quest ID = 0 it will still work but can't be edited via Plugin Command using ID (will still be possible to change description via Name)