chore: release 0.9.0

Bump Angular dependencies to 8.x and TypeScript to 3.4.x
Update peerDependencies to version 8 and forward
Add build:lib script to package.json

Author: brandonroberts

CHANGELOG.md

@@ -9,6 +9,12 @@ because this is a development tool, not a production product.
 We do try to tell you about such changes in this `CHANGELOG.md`
 and we fix bugs as fast as we can.
 
+<a id="0.9.0"></a>
+## 0.9.0 (2019-06-20)
+
+* update to support Angular version 8.x and forward
+* no functional changes
+
 <a id="0.8.0"></a>
 ## 0.8.0 (2018-12-06)