v0.4.0

• Merge collection state and collection-single stats in to stats home
• Better user interface and interaction, change ionic slide directive to swiper
• Improve fetching pictures and local cache
• Optimize memory in fetching images.
• Update dependencies:
  • ionic: update to driftyco/ionic-bower#master
  • debug: removed, use console.log instead.
  • mindb: added
  • blobimage: added
  • swiper: added
  • angular.js: updated to v1.3.6
• 更好的交互方式：左右滑动图片切换图博，上下滑动图片在同一个图博内切换
• 删除多余的场景页面：将三个场景页面合并为一个信息流页面
• 优化图片获取的逻辑，提升缓存效率
• 改善图片抓取的方法，改由 blobImage 模块的方式异步将图片存入 blob，再填入 img.src
• 其他依赖模块升级