diff --git a/dist/lodash.compat.js b/dist/lodash.compat.js
index 9eb31c288..59d81152c 100644
--- a/dist/lodash.compat.js
+++ b/dist/lodash.compat.js
@@ -1873,10 +1873,10 @@
         arity = 0;
       }
       // fast path for `_.bind`
-      data = [func, bitmask, arity, thisArg, partialArgs, partialRightArgs];
+      var newData = [func, bitmask, arity, thisArg, partialArgs, partialRightArgs];
       return (bitmask == BIND_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG))
-        ? baseBind(data)
-        : baseCreateWrapper(data);
+        ? baseBind(newData)
+        : baseCreateWrapper(newData);
     }
 
     /**
@@ -4699,7 +4699,7 @@
      */
     function curry(func, arity) {
       if (typeof arity != 'number') {
-        arity = +arity || null;
+        arity = +arity || (func ? func.length : 0);
       }
       return createWrapper(func, CURRY_FLAG, arity);
     }
diff --git a/dist/lodash.compat.min.js b/dist/lodash.compat.min.js
index b03718b84..6f68e2146 100644
--- a/dist/lodash.compat.min.js
+++ b/dist/lodash.compat.min.js
@@ -19,7 +19,7 @@ if(typeof a!="undefined")return!!a}if(n===t)return 0!==n||1/n==1/t;var i=typeof
 if(l!=at||!ie.nodeClass&&(p(n)||p(t)))return false;if(l=!ie.argsObject&&At(n)?_r:n.constructor,f=!ie.argsObject&&At(t)?_r:t.constructor,l!=f&&!($r.call(n,"constructor")&&$r.call(t,"constructor")||ur(l)&&l instanceof l&&ur(f)&&f instanceof f)&&"constructor"in n&&"constructor"in t)return false}for(l=!u,u||(u=c()),o||(o=c()),f=u.length;f--;)if(u[f]==n)return o[f]==t;var h=0,a=true;if(u.push(n),o.push(t),i){if(f=n.length,h=t.length,(a=h==f)||e)for(;h--;)if(i=f,g=t[h],e)for(;i--&&!(a=dt(n[i],g,r,e,u,o)););else if(!(a=dt(n[h],g,r,e,u,o)))break
 }else ce(t,function(t,i,l){return $r.call(l,i)?(h++,a=$r.call(n,i)&&dt(n[i],t,r,e,u,o)):void 0}),a&&!e&&ce(n,function(n,t,r){return $r.call(r,t)?a=-1<--h:void 0});return u.pop(),o.pop(),l&&(s(u),s(o)),a}function _t(n,t,r,e,u){(ye(t)?ht:mt)(t,function(t,o){var a,i,l=t,f=n[o];if(t&&((i=ye(t))||me(t))){for(l=e.length;l--;)if(a=e[l]==t){f=u[l];break}if(!a){var c;r&&(l=r(f,t),c=typeof l!="undefined")&&(f=l),c||(f=i?ye(f)?f:[]:me(f)?f:{}),e.push(t),u.push(f),c||_t(f,t,r,e,u)}}else r&&(l=r(f,t),typeof l=="undefined"&&(l=t)),typeof l!="undefined"&&(f=l);
 n[o]=f})}function wt(n,t){return n+Pr(te()*(t-n+1))}function jt(n,e,u){var o=-1,a=Ot(),i=n?n.length:0,l=le&&!e&&a===t&&i>=S,f=[];if(l)var p=le(),a=r;else p=u?c():f;for(;++o<i;){var g=n[o],h=u?u(g,o,n):g;(e?!o||p[p.length-1]!==h:0>a(p,h))&&((u||l)&&p.push(h),f.push(g))}return!l&&u&&s(p),f}function xt(n){return function(t,r,e){var o={};if(r=u.createCallback(r,e,3),ye(t)){e=-1;for(var a=t.length;++e<a;){var i=t[e];n(o,i,r(i,e,t),t)}}else ht(t,function(t,e,u){n(o,t,r(t,e,u),u)});return o}}function Ct(n,t,r,e,u,o){var a=t&j,i=t&x,l=t&O,f=t&E;
-if(!i&&!ur(n))throw new xr;l&&!u.length&&(t&=~O,l=u=false),f&&!o.length&&(t&=~E,f=o=false);var c=!i&&n[N];return c&&true!==c?(c=Tt(c),c[4]&&(c[4]=Tt(c[4])),c[5]&&(c[5]=Tt(c[5])),typeof r=="number"&&(c[2]=r),n=c[1]&j,a&&!n&&(c[3]=e),!a&&n&&(t|=k),l&&(c[4]?Lr.apply(c[4],u):c[4]=u),f&&(c[5]?Kr.apply(c[5],o):c[5]=o),c[1]|=t,Ct.apply(null,c)):(null==r?r=i?0:n.length:0>r&&(r=0),c=[n,t,r,e,u,o],t==j||t==(j|O)?m(c):st(c))}function kt(n){n.d=Y;var t=mr,r="return function("+n.a+"){",e="var r="+n.b+";if(!j(p)){return r}";
+if(!i&&!ur(n))throw new xr;l&&!u.length&&(t&=~O,l=u=false),f&&!o.length&&(t&=~E,f=o=false);var c=!i&&n[N];return c&&true!==c?(c=Tt(c),c[4]&&(c[4]=Tt(c[4])),c[5]&&(c[5]=Tt(c[5])),typeof r=="number"&&(c[2]=r),n=c[1]&j,a&&!n&&(c[3]=e),!a&&n&&(t|=k),l&&(c[4]?Lr.apply(c[4],u):c[4]=u),f&&(c[5]?Kr.apply(c[5],o):c[5]=o),c[1]|=t,Ct.apply(null,c)):(null==r?r=i?0:n.length:0>r&&(r=0),e=[n,t,r,e,u,o],t==j||t==(j|O)?m(e):st(e))}function kt(n){n.d=Y;var t=mr,r="return function("+n.a+"){",e="var r="+n.b+";if(!j(p)){return r}";
 ie.nonEnumArgs&&(e+="var m=p.length;if(m&&i(p)){l=-1;while(++l<m){l+='';"+n.c+";}return r}"),ie.enumPrototypes&&(e+="var t=typeof p=='function';"),ie.enumErrorProps&&(e+="var s=p===f||p instanceof Error;");var u=[];if(ie.enumPrototypes&&u.push("!(t&&l=='prototype')"),ie.enumErrorProps&&u.push("!(s&&(l=='message'||l=='name'))"),e+="for(var l in p){",n.e&&u.push("g.call(p,l)"),u.length&&(e+="if("+u.join("&&")+"){"),e+=n.c+";",u.length&&(e+="}"),e+="}",ie.nonEnumShadows){for(e+="if(p!==q){var d=p.constructor,k=p===(d&&d.prototype),b=p===v?u:p===f?e:w.call(p),n=o[b];",u=0;7>u;u++)e+="l='"+n.d[u]+"';if((!(k&&n[l])&&g.call(p,l))",n.e||(e+="||(!n[l]&&p[l]!==q[l])"),e+="){"+n.c+"}";
 e+="}"}return t("e,f,g,i,j,q,o,u,v,w",r+(e+"return r;")+"}")(et,kr,$r,At,or,Or,ae,lt,Er,Ir)}function Ot(){var n=(n=u.indexOf)===Nt?t:n;return n}function Et(n){return typeof n=="function"&&Nr.test(qr.call(n))}function St(n){var t,r;return!n||Ir.call(n)!=at||!$r.call(n,"constructor")&&(t=n.constructor,ur(t)&&!(t instanceof t))||!ie.argsClass&&At(n)||!ie.nodeClass&&p(n)?false:ie.ownLast?(ce(n,function(n,t,e){return r=$r.call(e,t),false}),false!==r):(ce(n,function(n,t){r=t}),typeof r=="undefined"||$r.call(n,r))
 }function At(n){return n&&typeof n=="object"&&typeof n.length=="number"&&Ir.call(n)==Z||false}function It(n,t,r){var e=0,o=n?n.length:0;if(typeof t!="number"&&null!=t){var a=-1;for(t=u.createCallback(t,r,3);++a<o&&t(n[a],a,n);)e++}else if(e=t,null==e||r)return n?n[0]:w;return Tt(n,0,0<e?e:0)}function Nt(n,r,e){var u=n?n.length:0;if(typeof e=="number")e=0>e?Qr(0,u+e):e||0;else if(e)return e=Pt(n,r),u&&n[e]===r?e:-1;return t(n,r,e)}function Rt(n,t,r){if(typeof t!="number"&&null!=t){var e=0,o=-1,a=n?n.length:0;
@@ -42,7 +42,7 @@ try{ie.dom=11===Sr.createDocumentFragment().nodeType}catch(o){ie.dom=false}try{i
 });var me=Fr?function(n){if(!n||Ir.call(n)!=at||!ie.argsClass&&At(n))return false;var t=n.valueOf,r=Et(t)&&(r=Fr(t))&&Fr(r);return r?n==r||Fr(n)==r:St(n)}:St,de=Jr?function(n){return or(n)?ie.enumPrototypes&&typeof n=="function"||ie.nonEnumArgs&&n.length&&At(n)?pe(n):Jr(n):[]}:pe,be=re?function(n,t){return null==n?"":null==t?re.call(n):h(n,t)}:h,_e=ee?function(n,t){return null==n?"":null==t?ee.call(n):v(n,t)}:v,we=ue?function(n,t){return null==n?"":null==t?ue.call(n):y(n,t)}:y,je=Zr||function(){return(new yr).getTime()
 },xe=8==ne(G+"08")?ne:function(n,t){return n=be(n),ne(n,+t||(M.test(n)?16:10))};return u.after=function(n,t){if(!ur(t))throw new xr;return function(){return 1>--n?t.apply(this,arguments):void 0}},u.assign=Zt,u.at=function(n,t){var r=arguments,e=-1,u=vt(r,true,false,1),o=u.length,a=typeof t;for("number"!=a&&"string"!=a||!r[2]||r[2][t]!==n||(o=1),ie.unindexedChars&&ir(n)&&(n=n.split("")),r=hr(o);++e<o;)r[e]=n[u[e]];return r},u.bind=Qt,u.bindAll=function(n){for(var t=1<arguments.length?vt(arguments,true,false,1):rr(n),r=-1,e=t.length;++r<e;){var u=t[r];
 n[u]=Ct(n[u],j,null,n)}return n},u.bindKey=function(n,t){return 3>arguments.length?Ct(t,j|x,null,n):Ct(t,j|x|O,null,n,Tt(arguments,2))},u.chain=function(n){return n=new o(n),n.__chain__=true,n},u.compact=function(n){for(var t=-1,r=n?n.length:0,e=0,u=[];++t<r;){var o=n[t];o&&(u[e++]=o)}return u},u.compose=function(){for(var n=arguments,t=n.length;t--;)if(!ur(n[t]))throw new xr;return function(){for(var t=arguments,r=n.length;r--;)t=[n[r].apply(this,t)];return t[0]}},u.constant=function(n){return function(){return n
-}},u.countBy=se,u.create=function(n,t){var r=A(n);return t?Zt(r,t):r},u.createCallback=function(n,t,r){var e=typeof n;return null==n||"function"==e?H(n,t,r):"object"!=e?gr(n):cr(n)},u.curry=function(n,t){return typeof t!="number"&&(t=+t||null),Ct(n,C,t)},u.debounce=Yt,u.defaults=nr,u.defer=function(n){if(!ur(n))throw new xr;var t=Tt(arguments,1);return Wr(function(){n.apply(w,t)},1)},u.delay=function(n,t){if(!ur(n))throw new xr;var r=Tt(arguments,2);return Wr(function(){n.apply(w,r)},t)},u.difference=function(n){return gt(n,vt(arguments,true,true,1))
+}},u.countBy=se,u.create=function(n,t){var r=A(n);return t?Zt(r,t):r},u.createCallback=function(n,t,r){var e=typeof n;return null==n||"function"==e?H(n,t,r):"object"!=e?gr(n):cr(n)},u.curry=function(n,t){return typeof t!="number"&&(t=+t||(n?n.length:0)),Ct(n,C,t)},u.debounce=Yt,u.defaults=nr,u.defer=function(n){if(!ur(n))throw new xr;var t=Tt(arguments,1);return Wr(function(){n.apply(w,t)},1)},u.delay=function(n,t){if(!ur(n))throw new xr;var r=Tt(arguments,2);return Wr(function(){n.apply(w,r)},t)},u.difference=function(n){return gt(n,vt(arguments,true,true,1))
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diff --git a/dist/lodash.js b/dist/lodash.js
index af4840e3b..6706ea162 100644
--- a/dist/lodash.js
+++ b/dist/lodash.js
@@ -1648,10 +1648,10 @@
         arity = 0;
       }
       // fast path for `_.bind`
-      data = [func, bitmask, arity, thisArg, partialArgs, partialRightArgs];
+      var newData = [func, bitmask, arity, thisArg, partialArgs, partialRightArgs];
       return (bitmask == BIND_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG))
-        ? baseBind(data)
-        : baseCreateWrapper(data);
+        ? baseBind(newData)
+        : baseCreateWrapper(newData);
     }
 
     /**
@@ -4428,7 +4428,7 @@
      */
     function curry(func, arity) {
       if (typeof arity != 'number') {
-        arity = +arity || null;
+        arity = +arity || (func ? func.length : 0);
       }
       return createWrapper(func, CURRY_FLAG, arity);
     }
diff --git a/dist/lodash.min.js b/dist/lodash.min.js
index 972e59f21..53ec4bd5e 100644
--- a/dist/lodash.min.js
+++ b/dist/lodash.min.js
@@ -19,7 +19,7 @@ for(var r in n)Fr.call(n,r)&&t.push(r);return t}function o(n,t){if(!er(n))return
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+}}function kt(n,t,r,e,u,o){var i=t&w,a=t&j,f=t&C,l=t&O;if(!a&&!rr(n))throw new wr;f&&!u.length&&(t&=~C,f=u=false),l&&!o.length&&(t&=~O,l=o=false);var c=!a&&n[N];return c&&true!==c?(c=Rt(c),c[4]&&(c[4]=Rt(c[4])),c[5]&&(c[5]=Rt(c[5])),typeof r=="number"&&(c[2]=r),n=c[1]&w,i&&!n&&(c[3]=e),!i&&n&&(t|=x),f&&(c[4]?$r.apply(c[4],u):c[4]=u),l&&(c[5]?Wr.apply(c[5],o):c[5]=o),c[1]|=t,kt.apply(null,c)):(null==r?r=a?0:n.length:0>r&&(r=0),e=[n,t,r,e,u,o],t==w||t==(w|C)?S(e):pt(e))}function xt(){var n=(n=y.indexOf)===Et?t:n;
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diff --git a/dist/lodash.underscore.js b/dist/lodash.underscore.js
index a776b8fb1..5372b5780 100644
--- a/dist/lodash.underscore.js
+++ b/dist/lodash.underscore.js
@@ -41,15 +41,9 @@
       reEvaluate = /<%([\s\S]+?)%>/g,
       reInterpolate = /<%=([\s\S]+?)%>/g;
 
-  /** Used to detected named functions */
-  var reFuncName = /^\s*function[ \n\r\t]+\w/;
-
   /** Used to ensure capturing order of template delimiters */
   var reNoMatch = /($^)/;
 
-  /** Used to detect functions containing a `this` reference */
-  var reThis = /\bthis\b/;
-
   /** Used to match unescaped characters in compiled string literals */
   var reUnescapedString = /['\n\r\t\u2028\u2029\\]/g;
 
@@ -64,14 +58,6 @@
       regexpClass = '[object RegExp]',
       stringClass = '[object String]';
 
-  /** Used as the property descriptor for wrapper metadata */
-  var descriptor = {
-    'configurable': false,
-    'enumerable': false,
-    'value': null,
-    'writable': false
-  };
-
   /**
    * Used to convert characters to HTML entities:
    *
@@ -249,19 +235,7 @@
       hasOwnProperty = objectProto.hasOwnProperty,
       push = arrayRef.push,
       propertyIsEnumerable = objectProto.propertyIsEnumerable,
-      splice = arrayRef.splice,
-      unshift = arrayRef.unshift;
-
-  /** Used to set meta data on functions */
-  var defineProperty = (function() {
-    // IE 8 only accepts DOM elements
-    try {
-      var o = {},
-          func = isNative(func = Object.defineProperty) && func,
-          result = func(o, o, o) && func;
-    } catch(e) { }
-    return result;
-  }());
+      splice = arrayRef.splice;
 
   /* Native method shortcuts for methods with the same name as other `lodash` methods */
   var nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate,
@@ -470,7 +444,6 @@
       }
       return func.apply(thisArg, args || arguments);
     }
-    setData(bound, data);
     return bound;
   }
 
@@ -518,28 +491,6 @@
     if (typeof thisArg == 'undefined' || !('prototype' in func)) {
       return func;
     }
-    var data = func[expando];
-    if (typeof data == 'undefined') {
-      if (support.funcNames) {
-        data = !func.name;
-      }
-      data = data || !support.funcDecomp;
-      if (!data) {
-        var source = fnToString.call(func);
-        if (!support.funcNames) {
-          data = !reFuncName.test(source);
-        }
-        if (!data) {
-          // checks if `func` references the `this` keyword and stores the result
-          data = reThis.test(source);
-          setData(func, data);
-        }
-      }
-    }
-    // exit early if there are no `this` references or `func` is bound
-    if (data === false || (data !== true && data[1] & BIND_FLAG)) {
-      return func;
-    }
     switch (argCount) {
       case 1: return function(value) {
         return func.call(thisArg, value);
@@ -612,7 +563,6 @@
       }
       return func.apply(thisBinding, args);
     }
-    setData(bound, data);
     return bound;
   }
 
@@ -971,62 +921,16 @@
       bitmask &= ~PARTIAL_RIGHT_FLAG;
       isPartialRight = partialRightArgs = false;
     }
-    var data = !isBindKey && func[expando];
-    if (data && data !== true) {
-      // shallow clone `data`
-      data = slice(data);
-
-      // clone partial left arguments
-      if (data[4]) {
-        data[4] = slice(data[4]);
-      }
-      // clone partial right arguments
-      if (data[5]) {
-        data[5] = slice(data[5]);
-      }
-      // set arity if provided
-      if (typeof arity == 'number') {
-        data[2] = arity;
-      }
-      // set `thisArg` if not previously bound
-      var bound = data[1] & BIND_FLAG;
-      if (isBind && !bound) {
-        data[3] = thisArg;
-      }
-      // set if currying a bound function
-      if (!isBind && bound) {
-        bitmask |= CURRY_BOUND_FLAG;
-      }
-      // append partial left arguments
-      if (isPartial) {
-        if (data[4]) {
-          push.apply(data[4], partialArgs);
-        } else {
-          data[4] = partialArgs;
-        }
-      }
-      // prepend partial right arguments
-      if (isPartialRight) {
-        if (data[5]) {
-          unshift.apply(data[5], partialRightArgs);
-        } else {
-          data[5] = partialRightArgs;
-        }
-      }
-      // merge flags
-      data[1] |= bitmask;
-      return createWrapper.apply(null, data);
-    }
     if (arity == null) {
       arity = isBindKey ? 0 : func.length;
     } else if (arity < 0) {
       arity = 0;
     }
     // fast path for `_.bind`
-    data = [func, bitmask, arity, thisArg, partialArgs, partialRightArgs];
+    var newData = [func, bitmask, arity, thisArg, partialArgs, partialRightArgs];
     return (bitmask == BIND_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG))
-      ? baseBind(data)
-      : baseCreateWrapper(data);
+      ? baseBind(newData)
+      : baseCreateWrapper(newData);
   }
 
   /**
@@ -1053,18 +957,6 @@
     return typeof value == 'function' && reNative.test(fnToString.call(value));
   }
 
-  /**
-   * Sets wrapper metadata on a given function.
-   *
-   * @private
-   * @param {Function} func The function to set data on.
-   * @param {Array} value The data array to set.
-   */
-  var setData = !defineProperty ? noop : function(func, value) {
-    descriptor.value = value;
-    defineProperty(func, expando, descriptor);
-  };
-
   /*--------------------------------------------------------------------------*/
 
   /**
diff --git a/dist/lodash.underscore.min.js b/dist/lodash.underscore.min.js
index 2d01a6d64..d4153c321 100644
--- a/dist/lodash.underscore.min.js
+++ b/dist/lodash.underscore.min.js
@@ -3,40 +3,38 @@
  * Lo-Dash 2.4.1 (Custom Build) lodash.com/license | Underscore.js 1.5.2 underscorejs.org/LICENSE
  * Build: `lodash underscore exports="amd,commonjs,global,node" -o ./dist/lodash.underscore.js`
  */
-;(function(){function n(n,r,t){t=(t||0)-1;for(var e=n?n.length:0;++t<e;)if(n[t]===r)return t;return-1}function r(n,r){var t;n:{t=n.f;var e=r.f;if(t!==e){if(t>e||typeof t=="undefined"){t=1;break n}if(t<e||typeof e=="undefined"){t=-1;break n}}t=0}return t||n.g-r.g}function t(n){return Sr[n]}function e(n){return"\\"+qr[n]}function u(n){return Nr[n]}function o(n){return n instanceof o?n:new i(n)}function i(n,r){this.__chain__=!!r,this.__wrapped__=n}function f(n){function r(){if(u){var n=T(u);Hr.apply(n,arguments)
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diff --git a/lodash.js b/lodash.js
index d7c9ae671..83c532c0a 100644
--- a/lodash.js
+++ b/lodash.js
@@ -1887,10 +1887,10 @@
         arity = 0;
       }
       // fast path for `_.bind`
-      data = [func, bitmask, arity, thisArg, partialArgs, partialRightArgs];
+      var newData = [func, bitmask, arity, thisArg, partialArgs, partialRightArgs];
       return (bitmask == BIND_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG))
-        ? baseBind(data)
-        : baseCreateWrapper(data);
+        ? baseBind(newData)
+        : baseCreateWrapper(newData);
     }
 
     /**