Breaking Changes:

• Internet Explorer support is now deprecated
• Add project ID to ExternalTaskProviderInterface::fetch()

Fixes and Improvements:

• Fixed issue of tooltip not disapearing
• Update Docker image to Alpine Linux 3.10.2
• Hide due date time on the card if time is 00:00
• Add new plugin hooks in view switcher
• Ignore Dockerfiles from git archive
• Remove dependency on nodejs and gulp
• Remove dependency on Sass
  • Convert *.sass files to vanilla CSS
  • Start using CSS variables
  • Add PHP minifier
• Add link button to text editor
• Implements check for duplicate default categories
• Implements check for duplicate default columns
• Fix HTML parsing in Markdown editor
• Change checkboxes alignment in task creation form
• Add support for reference:none
• Fix tabindexes on task creation and modification forms
• Add option to clone filters on project duplication
  • Fixed missing metadata option from project "create from"
  • Added option to clone project custom filters
  • Added append option to custom field tests
  • Added a test that uses the "append" option
  • Fixed disabled swimlane duplication error with Postgresql
• Update translations
• Save thumbnails as PNG to have transparency
• New action to update the start date when a task move away from a column
• Add the possibility to sort columns by due date
• Add "identifier" beside "name" while creating a new project