v3.0.0 - ES2018, drop IE10

• ❌ BREAKING - Drop AMD / RequireJS support
• ❌ BREAKING - Drop IE10 & IE11 support
• 🛠 Update JS code to ES2018.
• 📦 Use Unidragger v3. Remove Unipointer
• 🔔 Set handle to Element or Array or NodeList. #166 #209
• 🐞 Allow to scroll on element when dragging is disabled. Fix bug #189
• 🛠 Check for window for server-size rendering environments. #167 #154
• 🛠 Allow to trigger dragEnd to stop dragging. #177