Angular 9 support

[bhattshru]

I was updating my project from v8 to v9. The build fails with a warning.

Warning: Entry point 'angular2-tinymce' contains deep imports into '/Users/Documents/GitHub/angular 9/node_modules/tinymce/tinymce.min', '/Users/Documents/GitHub/angular 9/node_modules/tinymce/plugins/link/plugin.js',

Version :
"@tinymce/tinymce-angular": "^3.5.0"
"angular2-tinymce": "^3.3.0"
Angular module versions:
"@angular-devkit/build-angular": "~0.901.1",
"@angular/animations": "9.1.1",
"@angular/cdk": "^9.2.0",
"@angular/cli": "^9.1.1",
"@angular/common": "9.1.1",
"@angular/compiler": "9.1.1",
"@angular/compiler-cli": "9.1.1",
"@angular/core": "9.1.1",