Merged PR 173: Implements API methods through right click + more (read desc)

- Implements API methods through right click
- Refactor events
- Refactor usage of setHistory and setHistoryCurrentStep into a single function
- Update ContainerOperations documentations
- Added AddContainers in order to add multiple containers + refactor AddContainer to use it
- Fix regression
- Fix AddContainer at index

src/utils/saveload.ts

@@ -50,7 +50,7 @@ export function GetCircularReplacer(): (key: any, value: object | Map<string, an
       return;
     }
 
-    if (key === 'Symbols') {
+    if (key === 'symbols') {
       return Array.from((value as Map<string, any>).entries());
     }