feat(no-return-void): implicit types are now checked by default

BREAKING CHANGE: implicit types are now checked by default

Author: RebeccaStevens

docs/rules/no-return-void.md

@@ -49,7 +49,7 @@ The default options:
 {
   allowNull: true,
   allowUndefined: true,
-  ignoreImplicit: true,
+  ignoreImplicit: false,
 }
 ```
 

src/rules/no-return-void.ts

@@ -46,7 +46,7 @@ const schema: JSONSchema4 = [
 const defaultOptions: Options = {
   allowNull: true,
   allowUndefined: true,
-  ignoreImplicit: true,
+  ignoreImplicit: false,
 };
 
 // The possible error messages.