Removed support for PHP 5.2 (in Travis CI)

Added IRC notifications of the build.

Fixes from the community.

Detection fixes and new integration tests

See serbanghita#448, serbanghita#446, serbanghita#442, serbanghita#440

Added new Samsung tablets and other tablets requested by users.

Minor regex changes.

Merged CloudFront feature request.

New Samsung and Asus devices

Bugs and features from https://github.com/serbanghita/Mobile-Detect/m…

…ilestones/2.8.13

Tablets regex fixes.

Fixes from users.

New Samsung tablets.

Improved the Amazon tablet list.