Simplify getMethodAssignments, add removeMethodAssignments, and avoid some cleanup when the --no-dep flag is passed in build.js.

Former-commit-id: aebfc41fdde98df243c4620ee729977775cba52b

dist/lodash.underscore.js

@@ -4384,9 +4384,6 @@
   lodash.take = first;
   lodash.head = first;
 
-  // add functions to `lodash.prototype`
-  mixin(lodash);
-
   /*--------------------------------------------------------------------------*/
 
   /**
@@ -4398,6 +4395,9 @@
    */
   lodash.VERSION = '1.3.1';
 
+  // add functions to `lodash.prototype`
+  mixin(lodash);
+
   // add "Chaining" functions to the wrapper
   lodash.prototype.chain = wrapperChain;
   lodash.prototype.value = wrapperValueOf;

dist/lodash.underscore.min.js

@@ -32,5 +32,5 @@ return e},f.collect=F,f.drop=V,f.each=B,f.extend=y,f.methods=_,f.object=function
 for(typeof r=="number"&&(e=(0>r?Rt(0,e+r):Dt(r,e-1))+1);e--;)if(n[e]===t)return e;return-1},f.mixin=L,f.noConflict=function(){return n._=bt,this},f.random=function(n,t){n==X&&t==X&&(t=1),n=+n||0,t==X?(t=n,n=0):t=+t||0;var r=Mt();return n%1||t%1?n+Dt(r*(t-n+parseFloat("1e-"+((r+"").length-1))),t):n+xt(r*(t-n+1))},f.reduce=D,f.reduceRight=M,f.result=function(n,t){var r=n?n[t]:X;return w(r)?n[t]():r},f.size=function(n){var t=n?n.length:0;return typeof t=="number"?t:Pt(n).length},f.some=$,f.sortedIndex=W,f.template=function(n,t,r){var e=f.templateSettings;
 n||(n=""),r=m({},r,e);var u=0,o="__p+='",e=r.variable;n.replace(RegExp((r.escape||et).source+"|"+(r.interpolate||et).source+"|"+(r.evaluate||et).source+"|$","g"),function(t,r,e,a,f){return o+=n.slice(u,f).replace(ot,i),r&&(o+="'+_['escape']("+r+")+'"),a&&(o+="';"+a+";__p+='"),e&&(o+="'+((__t=("+e+"))==null?'':__t)+'"),u=f+t.length,t}),o+="';\n",e||(e="obj",o="with("+e+"||{}){"+o+"}"),o="function("+e+"){var __t,__p='',__j=Array.prototype.join;function print(){__p+=__j.call(arguments,'')}"+o+"return __p}";
 try{var a=Function("_","return "+o)(f)}catch(c){throw c.source=o,c}return t?a(t):(a.source=o,a)},f.unescape=function(n){return n==X?"":(n+"").replace(rt,g)},f.uniqueId=function(n){var t=++Z+"";return n?n+t:t},f.all=T,f.any=$,f.detect=k,f.findWhere=function(n,t){return I(n,t,Q)},f.foldl=D,f.foldr=M,f.include=S,f.inject=D,f.first=C,f.last=function(n,t,r){if(n){var e=0,u=n.length;if(typeof t!="number"&&t!=X){var o=u;for(t=J(t,r);o--&&t(n[o],o,n);)e++}else if(e=t,e==X||r)return n[u-1];return $t.call(n,Rt(0,u-e))
-}},f.take=C,f.head=C,L(f),f.VERSION="1.3.1",f.prototype.chain=function(){return this.__chain__=Q,this},f.prototype.value=function(){return this.__wrapped__},B("pop push reverse shift sort splice unshift".split(" "),function(n){var t=dt[n];f.prototype[n]=function(){var n=this.__wrapped__;return t.apply(n,arguments),!zt.spliceObjects&&0===n.length&&delete n[0],this}}),B(["concat","join","slice"],function(n){var t=dt[n];f.prototype[n]=function(){var n=t.apply(this.__wrapped__,arguments);return this.__chain__&&(n=new c(n),n.__chain__=Q),n
+}},f.take=C,f.head=C,f.VERSION="1.3.1",L(f),f.prototype.chain=function(){return this.__chain__=Q,this},f.prototype.value=function(){return this.__wrapped__},B("pop push reverse shift sort splice unshift".split(" "),function(n){var t=dt[n];f.prototype[n]=function(){var n=this.__wrapped__;return t.apply(n,arguments),!zt.spliceObjects&&0===n.length&&delete n[0],this}}),B(["concat","join","slice"],function(n){var t=dt[n];f.prototype[n]=function(){var n=t.apply(this.__wrapped__,arguments);return this.__chain__&&(n=new c(n),n.__chain__=Q),n
 }}),typeof define=="function"&&typeof define.amd=="object"&&define.amd?(n._=f, define(function(){return f})):yt&&!yt.nodeType?mt?(mt.exports=f)._=f:yt._=f:n._=f}(this);