issue #7: support angular 10 (#8)

- ran `ng update @angular/core @angular/cli`
- updated other dependencies
- update peerDependencies to specify angular 10
- bump version to v4, update changelog
- switch package manager to yarn

CHANGES.md

@@ -1,3 +1,9 @@
+# 4.0.0 - 2020-09-04
+- Support Angular 10
+- Dependencies updated
+
+*BREAKING CHANGES:* Dropped support for angular versions prior to v10
+
 # 3.1.0 - 2020-03-14
 - Support Angular 9
 - Dependencies updated
@@ -11,7 +17,7 @@
 - Amend README.md
 
 # 3.0.0 - 2019-08-11
-- Dependencies updated for Angular 8, Angular 7 support is maintained
+- Dependencies updated for Angular 8, Angular 7 support retained
 
 ** Breaking Changes **
 - Type error correction level correctly using string union rather than string.
@@ -20,7 +26,7 @@
 
 # 2.0.0 - 2019-05-12
 - Re-written to use qrcode npm module to generate QR codes
-  in browser using JavaScript
+  in browsers using JavaScript
 
 - Add errorCorrectionLevel input to qr-code component
 

README.md

@@ -6,7 +6,7 @@
 Easy to use AOT compatible QR code generator for Angular projects.
 
 Features:
-* Compatible with Angular 7, 8 and 9
+* Compatible with Angular 10
 * Leverages the widely used [qrcode](https://www.npmjs.com/package/qrcode) 
   package to do the heavy lifting
 * Renders to HTML Canvas

angular.json

@@ -70,8 +70,7 @@
             "styles": [
               "projects/ng-qrcode-demo/src/styles.scss"
             ],
-            "scripts": [],
-            "es5BrowserSupport": true
+            "scripts": []
           },
           "configurations": {
             "production": {
@@ -155,6 +154,7 @@
   },
   "defaultProject": "ng-qrcode",
   "cli": {
-    "analytics": "973384b3-6242-4947-9aae-a66f063a7508"
+    "analytics": "973384b3-6242-4947-9aae-a66f063a7508",
+    "packageManager": "yarn"
   }
 }