MC-1730 Making neo the default theme

packages/mermaid/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@mermaid-chart/mermaid",
-  "version": "11.0.0-b.55",
+  "version": "11.0.0-b.56",
   "description": "Markdown-ish syntax for generating flowcharts, sequence diagrams, class diagrams, gantt charts and git graphs.",
   "type": "module",
   "module": "./dist/mermaid.core.mjs",

packages/mermaid/src/mermaidAPI.ts

@@ -494,7 +494,7 @@ function initialize(options: MermaidConfig = {}) {
       options.themeVariables
     );
   } else if (options) {
-    options.themeVariables = theme.default.getThemeVariables(options.themeVariables);
+    options.themeVariables = theme.neo.getThemeVariables(options.themeVariables);
   }
 
   const config =

packages/mermaid/src/schemas/config.schema.yaml

@@ -71,7 +71,7 @@ properties:
       - 'null' # should this be a `null`-type?
     meta:enum:
       'null': Can be set to disable any pre-defined mermaid theme
-    default: 'default'
+    default: 'neo'
   themeVariables:
     tsType: any
   themeCSS:
@@ -84,7 +84,7 @@ properties:
       - classic
       - handdrawn
       - neo
-    default: 'classic'
+    default: 'neo'
   handdrawnSeed:
     description: |
       Defines the seed to be used when using handdrawn look. This is important for the automated tests as they will always find differences without the seed. The default value is 0 which gives a random seed.