Release 8.2.0

• Merge pull request #304 from msenosiain/add-tabindex-attribute-toggle-visibility (9892c80)
• Merge pull request #318 from AndriiNeverov/schematics-angular11-support (9642451)
• Upgraded Schematics to 11.1.2 (d5744a1)
• Merge branch 'master' into add-tabindex-attribute-toggle-visibility (84eb5b7)
• fix(project): upgraded angulat to v11.1.2 (920cfc2)
• Merge branch 'master' into add-tabindex-attribute-toggle-visibility (ad73e28)
• Toggle visibility: Add option input for tabindex value (ea84d76)