feat: use packagr to build as angular package format (#1634)

switches build from rollup to ng-packagr

fixes: #1647 #1157

Author: terencehonles

.gitignore

@@ -9,6 +9,7 @@ test-built
 npm-debug.log
 *.ngfactory.ts
 coverage/
+.*.swp
 .idea/
 .DS_Store
 docs/public

.travis.yml

@@ -16,7 +16,6 @@ cache:
 
 before_install:
   - yarn global add codecov
-# - time npm i -g yarn --cache-min 999999999
 
 install:
   - time yarn