Allow _.compose to be called without arguments. [closes #352]

dist/lodash.compat.js

@@ -5267,7 +5267,7 @@
      */
     function compose() {
       var funcs = arguments,
-          length = funcs.length || 1;
+          length = funcs.length;
 
       while (length--) {
         if (!isFunction(funcs[length])) {

dist/lodash.compat.min.js

@@ -33,7 +33,7 @@ try{Le.nodeClass=!(we.call(document)==J&&!({toString:0}+""))}catch(u){Le.nodeCla
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dist/lodash.js

@@ -4920,7 +4920,7 @@
      */
     function compose() {
       var funcs = arguments,
-          length = funcs.length || 1;
+          length = funcs.length;
 
       while (length--) {
         if (!isFunction(funcs[length])) {

dist/lodash.min.js

@@ -29,7 +29,7 @@ return function(){if(o=arguments,f=he(),l=this,p=g&&(c||!y),false===v)var e=y&&!
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dist/lodash.underscore.js

@@ -3636,7 +3636,7 @@
    */
   function compose() {
     var funcs = arguments,
-        length = funcs.length || 1;
+        length = funcs.length;
 
     while (length--) {
       if (!isFunction(funcs[length])) {

dist/lodash.underscore.min.js

@@ -23,7 +23,7 @@ e=0>e?qr(0,u+e):e||0}else if(e)return e=G(r,t),r[e]===t?e:-1;return n(r,t,e)}fun
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lodash.js

@@ -5287,7 +5287,7 @@
      */
     function compose() {
       var funcs = arguments,
-          length = funcs.length || 1;
+          length = funcs.length;
 
       while (length--) {
         if (!isFunction(funcs[length])) {

test/test.js

@@ -4649,7 +4649,12 @@
         _.forEach(falsey, function(value, index) {
           var pass = false;
           try {
-            index ? func(value) : func();
+            if (index) {
+              func(value);
+            } else {
+              func();
+              pass = methodName == 'compose';
+            }
           } catch(e) {
             pass = true;
           }