add multiple packages #192

Added wagtail-model-forms
Added wagtail-secret-sharing
Added wagtail-cache-invalidator
Added wagtail-stock-images

README.md

@@ -151,6 +151,7 @@ Awesome Wagtail [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38
 - [Wagtail Makeup](https://github.com/kevinhowbrook/wagtail-makeup) - A plugin that replaces all your images with [Unsplash](https://unsplash.com/) images.
 - [Rent Free Media](https://github.com/RentFreeMedia/rentfreemedia) - A media distribution framework built on Django and Wagtail. Premium / subscription-based publishing like Patreon or Substack.
 - [Wagtail CLIP](https://github.com/MattSegal/wagtail-clip) - A module for searching the contents of Wagtail images with natural language queries.
+- [Wagtail Stock Images](https://github.com/vicktornl/wagtail-stock-images) - Search stock images (e.g. via Unsplash) and save them to your Wagtail image library.
 
 ### Translations
 
@@ -166,6 +167,7 @@ Awesome Wagtail [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38
 - [wagtailstreamforms](https://github.com/AccentDesign/wagtailstreamforms) - Build forms in Wagtail's admin for use in streamfields.
 - [wagtail-contact-reply](https://github.com/KalobTaulien/wagtail-contact-reply) - Reply directly to form submissions from the Wagtail admin
 - [Wagtail JotForm](https://github.com/kevinhowbrook/wagtail-jotform) - Embeddable Jotform forms for Wagtail pages.
+- [Wagtail Model Forms](https://github.com/vicktornl/wagtail-model-forms) - The Wagtail Form Builder functionalities available for your models/snippets.
 
 ### Testing
 
@@ -201,6 +203,8 @@ Awesome Wagtail [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38
 - [Wagtail Trash](https://github.com/Frojd/wagtail-trash) - Will place pages in a trash can from where they can be restored instead of being permanently deleted.
 - [Wagtail PDF View](https://github.com/donhauser/wagtail-pdf) - Render Wagtail pages and models as PDF document using Weasyprint or LaTeX.
 - [Wagtail Grapple](https://github.com/torchbox/wagtail-grapple) - A Wagtail app that makes building GraphQL endpoints a breeze.
+- [Wagtail Secret Sharing](https://github.com/vicktornl/wagtail-secret-sharing) - Keep sensitive information out of your chat logs and email via a secure sharing protocol
+- [Wagtail Cache Invalidator](https://github.com/vicktornl/wagtail-cache-invalidator) - Invalidate and purge (frontend) cache via an user-friendly interface in the Wagtail CMS.
 
 ## Tools