Release 0.6.7

7b383c9 Enlarge scrollable containers on focus
93ab71a Enable to use useExistVar in JS assistant
8e72bd8 Switch to tau.history.back in helper
42e240b Remove flickering effect from DE saving
b1d9096 Switch focus to Assistant Wizard when it's opened
6a4b320 Preview mode appears always in the center of the screen
8932853 Make input for box-shadow larger
5cab250 Add input-border-warning less variable to VSC code
a37cc32 Make structure tree view scrollable
94b90fc Fix for displaying preview
7c28602 Fix behaviour panel - data exposing problem