update setters and docs

docs/reference/slate/range.md

@@ -16,7 +16,9 @@ Often times, you don't need to specifically know which point is the "anchor" and
 Range({
   anchor: Point,
   focus: Point,
+  isAtomic: Boolean,
   isFocused: Boolean,
+  marks: Set,
 })
 ```
 
@@ -32,12 +34,24 @@ The range's anchor point.
 
 The range's focus point.
 
+### `isAtomic`
+
+`Boolean`
+
+Whether the range is atomic (for decorations only).
+
 ### `isFocused`
 
 `Boolean`
 
 Whether the range currently has focus.
 
+### `marks`
+
+`Set`
+
+A set of marks associated with the range.
+
 ### `object`
 
 `String`
@@ -210,6 +224,24 @@ Return a new range with a new `end` point.
 
 Return a new range with a new `focus` point.
 
+### `setIsAtomic`
+
+`setIsAtomic(isAtomic: Boolean) => Range`
+
+Return a new range with a new `isAtomic` value.
+
+### `setIsFocused`
+
+`setIsFocused(isFocused: Boolean) => Range`
+
+Return a new range with a new `isFocused` value.
+
+### `setMarks`
+
+`setMarks(marks: Set|Null) => Range`
+
+Return a new range with a new set of `marks`.
+
 ### `setProperties`
 
 `setProperties(properties: Object|Range) => Range`

packages/slate/src/models/range.js

@@ -763,6 +763,18 @@ class Range extends Record(DEFAULTS) {
     return range
   }
 
+  /**
+   * Set the `isAtomic` property to a new `value`.
+   *
+   * @param {Boolean} value
+   * @return {Range}
+   */
+
+  setIsAtomic(value) {
+    const range = this.set('isAtomic', value)
+    return range
+  }
+
   /**
    * Set the `isFocused` property to a new `value`.
    *
@@ -775,6 +787,18 @@ class Range extends Record(DEFAULTS) {
     return range
   }
 
+  /**
+   * Set the `marks` property to a new set of `marks`.
+   *
+   * @param {Set} marks
+   * @return {Range}
+   */
+
+  setMarks(marks) {
+    const range = this.set('marks', marks)
+    return range
+  }
+
   /**
    * Set the anchor and focus points to new `values`.
    *