1.x-1.4.0

What's Changed

• Issue #67: improve help text by @herbdool in #74
• Issue #1: use dropbuttons and configure forms for field settings by @herbdool in #37
• Issue #1: ensure each field group type adds settings by @herbdool in #75
• Issue #36: remove DS support by @herbdool in #76

Full Changelog: 1.x-1.3.0...1.x-1.4.0