v2.1.4
fix: parallax.js

v2.1.3
improvement: only include js and css if there are background images

v2.1.2
fix: z-index

v2.1.1
fix: calculation of vertical position

v2.1.0
add: scale

v2.0.1, v2.0.2
fix: calculation of vertical position

v2.0.0
new: vertical position

v1.3.0
new: optional deactivate for mobile devices
fix: image calculation

v1.2.0
fix: image calculation
fix: js bugs
fix: no deactivation for mobile devices

v1.1.1
fix: styles

v1.1.0
fix: calculating of img size and position

v1.0.2
change: make services public

v1.0.1
change: composer.json

v1.0.0
Complete new programming of js, css and Contao template

v0.1.3
change: composer.json

v0.1.2
Compatibility for jquery 3.x

v0.1.0 / v0.1.1 
Bugfix

v0.0.0
Init