Default jwtLocalStorage to 'jwt' (#54)

This matches master - if we don't do this, we would have to set this in
each individual sub-app...so let's just make it opt-out.

Author: richmolj

lib-esm/model.js

@@ -136,7 +136,7 @@ export class JSORMBase {
   static currentClass: typeof JSORMBase = JSORMBase
   static beforeFetch: BeforeFilter | undefined
   static afterFetch: AfterFilter | undefined
-  static jwtLocalStorage: string | false = false
+  static jwtLocalStorage: string | false = 'jwt'
 
   private static _typeRegistry: JsonapiTypeRegistry
   private static _middlewareStack: MiddlewareStack