Add clamp to fp mapping.

lib/fp/mapping.js

@@ -64,7 +64,7 @@ module.exports = {
       'sortedLastIndexBy,sortedUniqBy,startsWith,sumBy,take,takeRight,takeRightWhile,' +
       'takeWhile,throttle,times,trunc,union,uniqBy,uniqueId,without,wrap,xor,zip').split(','),
     3: (
-      'assignWith,differenceBy,extendWith,inRange,intersectionBy,isEqualWith,' +
+      'assignWith,clamp,differenceBy,extendWith,inRange,intersectionBy,isEqualWith,' +
       'isMatchWith,mergeWith,omitBy,pickBy,pullAllBy,reduce,reduceRight,slice,' +
       'transform,unionBy,xorBy,zipWith').split(','),
     4:
@@ -80,6 +80,7 @@ module.exports = {
 
   /** Used to map ary to rearg configs by method names. */
   'methodReargMap': {
+    'clamp': [2, 0, 1],
     'reduce': [2, 0, 1],
     'reduceRight': [2, 0, 1],
     'slice': [2, 0, 1],