load icon config using Icons class
add labels for accordion group
use Contao 3.1 hooks initializeLayout instead of hacky parseTemplate hook
rename field name matching naming conventions
add gallery template for creating a carousel
split config in bootstrap.php and config.php and add template modifiers
add support for nav class setting in the nav templates
add replaceInsertTags hooks for {{icon::example}}
remove modified pagination class. A TemplateModifier is now used for that
move icon config files to a sub directory
add gallery template based on grid system
implement bootstrap namespaces for modules and content elements by using an Attributes object
use TemplateModifier so that complex modifiers are not stored in config/bootstrap.php
fix form button class setting
add theme template for mod_breadcrumb and pagination
add phpdocs and small code refactoring
implement ContentButtons element which allow to create Bootstrap button toolbar/group/dropdown elements
set default navbar class
change to abstract class and set wrapperType as attribute
update elements so that they work together with changes in BootstrapContentElement