Security fix release

This release fixes an XSS bug the shortcode handler, reported by yudha @ Wordfence

Bugfix release

Fix a bug that was introduced in v5.0, where viewing tracks in the WP backend via the 'View' bulk action did not work anymore.

Bugfix release

Fix some bugs that were introduced in v4.3.

Big feature update

Read all about it here: https://www.grendelman.net/wp/trackserver-v3-0-released/