Add compact mode, toggle with 'c'

src/Editor/Editor.php

@@ -216,6 +216,12 @@ class Editor
                     $this->redrawEditor();
                     break;
 
+                case "c":
+                    Settings::$compactGroups = !Settings::$compactGroups;
+                    $this->list->parseTree();
+                    $this->redrawEditor();
+                    break;
+    
                 case "\x0e": // ctrl-n
                     $this->document->load((object)[]);
                     $this->list->parseTree();
@@ -359,6 +365,8 @@ class Editor
             e  Edit selected value
             E  Edit selected key
             D  Delete selected key
+            c  Toggle compact list view
+            q  Toggle quoted keys in list view
            ^W  Write to file
            ^R  Read from file
            ^N  New document with empty object