refactor: remove deprecated engines

BREAKING CHANGE:

Deprecated `@nguniversal/aspnetcore-engine`, `@nguniversal/hapi-engine` and `@nguniversal/socket-engine` has been removed in favor of `@nguniversal/common`.

Closes #1232, closes #750 and closes #1454

.github/CODEOWNERS

@@ -1,13 +1,11 @@
-/modules/aspnetcore-engine/*                           @MarkPieszak @dgp1130
 /modules/builders                                      @alan-agius4
-/modules/common/*                                      @dgp1130 @CaerusKaru
-/modules/express-engine/*                              @dgp1130 @FrozenPandaz
-/modules/hapi-engine/*                                 @dgp1130 @CaerusKaru
+/modules/common/*                                      @dgp1130 @CaerusKaru @alan-agius4
+/modules/express-engine/*                              @dgp1130 @alan-agius4
 
 # Tooling
-/scripts/**                                        @CaerusKaru @dgp1130
-/integration/**                                    @CaerusKaru @dgp1130
-/tools/**                                          @CaerusKaru @dgp1130
+/scripts/**                                        @CaerusKaru @dgp1130 @alan-agius4
+/integration/**                                    @CaerusKaru @dgp1130 @alan-agius4
+/tools/**                                          @CaerusKaru @dgp1130 @alan-agius4
 
 # Misc
 /*                                                 @dgp1130

.github/ISSUE_TEMPLATE/Bug.md

@@ -21,11 +21,9 @@ issues for `window is not defined` and other hiccups when adopting Angular Unive
 
 <!-- ✍️edit: -->
 
-- [ ] aspnetcore-engine
 - [ ] builders
 - [ ] common
 - [ ] express-engine
-- [ ] hapi-engine
 
 ### Is this a regression?
 

.github/ISSUE_TEMPLATE/Feature_Request.md

@@ -9,11 +9,9 @@ about: You have an idea that you'd like to be implemented in Angular Universal
 
 <!-- ✍️edit: -->
 
-- [ ] aspnetcore-engine
 - [ ] builders
 - [ ] common
 - [ ] express-engine
-- [ ] hapi-engine
 
 ### Description
 

.ng-dev/release.ts

@@ -5,12 +5,9 @@ import { join } from 'path';
 export const release: ReleaseConfig = {
   representativeNpmPackage: '@nguniversal/common',
   npmPackages: [
-    { name: '@nguniversal/aspnetcore-engine' },
     { name: '@nguniversal/builders' },
     { name: '@nguniversal/common' },
     { name: '@nguniversal/express-engine' },
-    { name: '@nguniversal/hapi-engine' },
-    { name: '@nguniversal/socket-engine' },
   ],
   releaseNotes: {
     groupOrder: ['@nguniversal/common', '@nguniversal/builders', '@nguniversal/express-engine'],

README.md

@@ -37,9 +37,6 @@ The packages from this repo are published as scoped packages under [@nguniversal
 - [@nguniversal/common](/modules/common/README.md)
 - [@nguniversal/builders](/modules/builders/README.md)
 - [@nguniversal/express-engine](/modules/express-engine/README.md)
-- [@nguniversal/aspnetcore-engine](/modules/aspnetcore-engine/README.md)
-- [@nguniversal/hapi-engine](/modules/hapi-engine/README.md)
-- [@nguniversal/socket-engine](/modules/socket-engine)
 
 # Universal "Gotchas"
 
@@ -57,9 +54,7 @@ We believe that using the word "universal" is correct when referring to a JavaSc
 
 - [Adam Plumer](https://github.com/CaerusKaru) and [Fabian Wiles](https://github.com/Toxicable) - Current maintainers
 - [PatrickJS](https://twitter.com/gdi2290) and [Jeff Whelpley](https://twitter.com/jeffwhelpley) - Founders of the Angular Universal project. (Universal rendering is also called [PatrickJS-ing](https://twitter.com/jeffbcross/status/846512930971516928))
-- [Mark Pieszak](https://twitter.com/MarkPieszak) - Contributor and Evangelist, ASP.NET Core Engine
 - [Jason Jean](https://github.com/FrozenPandaz) - Express engine and Universal support for CLI
-- [Wassim Chegham](https://twitter.com/manekinekko) - Contributor and Evangelist, Hapi engine developer.
   - [Angular for the rest of us](https://medium.com/google-developer-experts/angular-universal-for-the-rest-of-us-922ca8bac84)
   - [Angular outside the browser](http://slides.com/wassimchegham/angular2-universal#/)
 - [Jeff Cross](https://twitter.com/jeffbcross) - Evangelist and performance consultant