Release 5.x (tzsk#177)

* Cleanup

* Release 5.x

* Apply php-cs Fixes

* Worlflow branch to master

Merge pull request tzsk#171 from sae13/patch-1

Update sms.php

Merge pull request tzsk#167 from khanzadimahdi/master

support Laravel 7.*

Merge pull request tzsk#141 from tzsk/dependabot/composer/squizlabs/p…

…hp_codesniffer-3.5.4

Bump squizlabs/php_codesniffer from 3.5.3 to 3.5.4

Merge pull request tzsk#35 from tzsk/analysis-zdApPL

Apply fixes from StyleCI

Update .travis.yml

Fix for nexmo client (tzsk#21)

Access using helper function

* Add helpers file

Updated readme

Notification Builder