Preview Version 1.17.1209
Added 2017-12-10 18:56:49 +0000 UTCA new version of the Aurora Builder Preview is now available for download along with the highly requested multiclassing.
Multiclassing
The initial implementation for mutliclassing has been added, when you meet the requirements (ability scores) you will be able to add a new class from the new 'level up & multiclassing' window. This is also the place to level up your your character classes and removing levels.
Manage Character Options
When you create a new character you enable the bundled character options or any custom character option giving you access to specific options. You can manage these options from the menu at any time. Since multiclassing isn't an actual option it's locked at the moment.
Compendium
A basic implementation of the compendium has been added, search for any element (spell, invocation, feat, language, etc) from the quick search box at the top of the application. The spell compendium is still available from the magic section.