1. Correct scaling
2. Config for save last selected theme
3. New format for xml file with schemes
4. New elements for toolbar:

• Add Node
• Delete Node
• Select
• Cut transition

Add table of transitions
Fix for read start state
ReactiveUI 11.4.17

Some optimization
Feature with opacity
Custom for drag and drop textbox
Undo - Redo for renaming
Validating for exists Nodes without connects

Fix some bags

Add way for create loop
Fix error with update connector position on change node width