Changed the maxError default to 50 as it yields much better results when shrink integers

Author: sunesimonsen

documentation/index.md

@@ -188,7 +188,7 @@ return expect(function (text) {
   or setting the query parameter `maxiterations` in the browser.
 * `maxErrorIterations` (default 1000): the number of iterations unexpected-check
   can use to find a better error when an error occurs.
-* `maxErrors` (default 20): the number of found errors before stopping the input
+* `maxErrors` (default 50): the number of found errors before stopping the input
   shrinking process.
 
 ```js

lib/unexpected-check.js

@@ -105,7 +105,7 @@
                 var generators = options.generators || [];
                 var maxIterations = options.maxIterations || defaultMaxIterations;
                 var maxErrorIterations = options.maxErrorIterations || 1000;
-                var maxErrors = options.maxErrors || 20;
+                var maxErrors = options.maxErrors || 50;
 
                 function createTask() {
                     var args = generators.map(function (g) {

test/unexpected-check.spec.js

@@ -60,7 +60,7 @@ describe('unexpected-check', function () {
                 expect(arr, 'not to contain', 2);
             }, 'to be valid for all', arrays);
         }, 'to throw',
-               'Ran 62 iterations and found 20 errors\n' +
+               'Ran 154 iterations and found 50 errors\n' +
                'counterexample:\n' +
                '\n' +
                '  Generated input: [ 2 ]\n' +
@@ -133,7 +133,7 @@ describe('unexpected-check', function () {
                 });
             }, 'to be valid for all', arrays);
         }, 'to throw',
-               'Ran 64 iterations and found 20 errors\n' +
+               'Ran 119 iterations and found 50 errors\n' +
                'counterexample:\n' +
                '\n' +
                '  Generated input: [ \')\' ]\n' +