feat(atob): port and modify from Base64.js
Merge pull request #3 from devinchen/atob

feat(atob): port and modify from Base64.js
chore(package.json): upgrade should to ^4.3.0
test(array_filter): strict policy for array and object
test(array_map): strict policy for array and object
Merge pull request #34 from tomchentw/fix/upgrade-of-shouldjs

Fix/upgrade of shouldjs
feat(regexp_search): port and modify from RegExp.prototype.search