Merge branch 'release/2.0.0' into develop
Merge branch 'hotfix/2.0.1' into develop
Initial draft of vanilla-JS version
No need to JSON.decode a javascript object
Use dash as default blank option label
Do not use MooTools events
Fixed 4-dimensional data
Fixed blank option for non-empty selects
Must update on initializing
Fire change event when updating select
Add "empty" css class when there are no options
Fixed blank option
CS
Fixed blank option destroying multidimensional options
Select the blank option by default

Otherwise the first option is selected in firefox, but a change
event is not fired.
Fixed IE8 issues
Select the blank option only if the field has no value
Renamed assets folder
The extension is now compatbile with Contao 3.3
Added the JavaScript at the end of the page to allow the condition field be after the current field in the DOM structure