diff --git a/docs/examples-docs/zh-CN/sku.md b/docs/examples-docs/zh-CN/sku.md
index 0a403b4d2..9899dca9d 100644
--- a/docs/examples-docs/zh-CN/sku.md
+++ b/docs/examples-docs/zh-CN/sku.md
@@ -101,7 +101,7 @@ Vue.component(Sku.name, Sku);
       <!-- 隐藏sku messages -->
       <template slot="sku-messages"></template>
       <!-- 自定义sku actions -->
-      <template slot="sku-actions" scope="props">
+      <template slot="sku-actions" slot-scope="props">
         <div class="van-sku-actions">
           <button class="van-sku__add-cart-btn" @click="handlePointClicked">
             积分兑换
diff --git a/docs/src/doc.config.js b/docs/src/doc.config.js
index 382792506..9c575bce2 100644
--- a/docs/src/doc.config.js
+++ b/docs/src/doc.config.js
@@ -2,18 +2,16 @@
 module.exports = {
   "zh-CN": {
     header: {
-      '首页': 'https://www.youzanyun.com/zanui',
-      'PC端': 'https://www.youzanyun.com/zanui/react',
-      '移动端': 'https://www.youzanyun.com/zanui/vue',
-      '微信小程序': 'https://github.com/youzan/zanui-weapp',
-      'English': '#/en-US/'
+      Github: 'https://github.com/youzan/vant',
+      English: '#/en-US/'
     },
     footer: {
       github: 'https://github.com/youzan/vant',
       nav: {
-        '有赞官网': 'https://www.youzan.com/',
-        '加入我们': 'https://job.youzan.com/',
-        '意见反馈': 'https://github.com/youzan/vant/issues'
+        'React': 'https://www.youzanyun.com/zanui/react',
+        '微信小程序': 'https://github.com/youzan/zanui-weapp',
+        '意见反馈': 'https://github.com/youzan/vant/issues',
+        '开发指南': 'https://github.com/youzan/vant/blob/dev/docs/examples-docs/zh-CN/contribute.md'
       }
     },
     nav: [
@@ -259,18 +257,16 @@ module.exports = {
   },
   "en-US": {
     header: {
-      'Homepage': 'https://www.youzanyun.com/zanui',
-      'PC': 'https://www.youzanyun.com/zanui/react',
-      'Mobile': 'https://www.youzanyun.com/zanui/vue',
-      'Weapp': 'https://github.com/youzan/zanui-weapp',
+      Github: 'https://github.com/youzan/vant',
       '中文': '#/zh-CN'
     },
     footer: {
       github: 'https://github.com/youzan/vant',
       nav: {
-        'Youzan': 'https://www.youzan.com/',
-        'Join us': 'https://job.youzan.com/',
-        'Feedback': 'https://github.com/youzan/vant/issues'
+        'React': 'https://www.youzanyun.com/zanui/react',
+        'Weapp': 'https://github.com/youzan/zanui-weapp',
+        'Feedback': 'https://github.com/youzan/vant/issues',
+        'Contribute': 'https://github.com/youzan/vant/blob/dev/docs/examples-docs/en-US/contribute.md'
       }
     },
     nav: [
diff --git a/package.json b/package.json
index 8b51d0215..375f117f8 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "vue-lazyload": "^1.1.3"
   },
   "peerDependencies": {
-    "vue": "^2.4.4"
+    "vue": ">= 2.4.0"
   },
   "devDependencies": {
     "autoprefixer": "^7.1.3",
@@ -65,7 +65,7 @@
     "babel-preset-env": "^1.6.0",
     "chai": "^4.1.2",
     "cheerio": "^0.22.0",
-    "codecov": "^2.2.0",
+    "codecov": "^2.3.1",
     "cross-env": "^5.0.5",
     "css-loader": "^0.28.7",
     "eslint-plugin-vue": "^2.1.0",
@@ -97,7 +97,7 @@
     "postcss": "^6.0.10",
     "postcss-calc": "^6.0.0",
     "postcss-easy-import": "^3.0.0",
-    "postcss-loader": "^2.0.6",
+    "postcss-loader": "^2.0.8",
     "precss": "2.0.0",
     "progress-bar-webpack-plugin": "^1.10.0",
     "rimraf": "^2.5.4",
@@ -107,16 +107,16 @@
     "style-loader": "^0.19.0",
     "uppercamelcase": "^3.0.0",
     "url-loader": "^0.6.2",
-    "vue": "^2.4.2",
+    "vue": "^2.5.2",
     "vue-loader": "^13.3.0",
-    "vue-markdown-loader": "^2.1.0",
-    "vue-router": "^3.0.0",
+    "vue-markdown-loader": "^2.2.2",
+    "vue-router": "^3.0.1",
     "vue-sfc-compiler": "^0.0.2",
     "vue-style-loader": "^3.0.0",
-    "vue-template-compiler": "^2.4.2",
+    "vue-template-compiler": "^2.5.2",
     "webpack": "^3.7.1",
     "webpack-bundle-analyzer": "^2.9.0",
-    "webpack-dev-server": "^2.7.1",
+    "webpack-dev-server": "^2.9.2",
     "webpack-merge": "^4.1.0",
     "zan-doc": "^0.3.6"
   }
diff --git a/packages/mixins/popup/index.js b/packages/mixins/popup/index.js
index 52317cbe2..208833abd 100644
--- a/packages/mixins/popup/index.js
+++ b/packages/mixins/popup/index.js
@@ -1,9 +1,9 @@
-import PopupManager from './popup-manager';
-import PopupContext from './popup-context';
+import manager from './popup-manager';
+import context from './popup-context';
 
 export default {
   props: {
-    // popup当前显示状态
+    // popup 当前显示状态
     value: {
       type: Boolean,
       default: false
@@ -13,16 +13,13 @@ export default {
       type: Boolean,
       default: false
     },
-    /**
-     * 点击遮罩层是否关闭popup
-     */
+    // 点击遮罩层是否关闭 popup
     closeOnClickOverlay: {
       type: Boolean,
       default: false
     },
     zIndex: [String, Number],
-    // popup滚动时是否body内容也滚动
-    // 默认为不滚动
+    // popup 滚动时是否禁用 body 滚动
     lockOnScroll: {
       type: Boolean,
       default: true
@@ -36,27 +33,18 @@ export default {
 
   watch: {
     value(val) {
-      if (val) {
-        if (this.opening) return;
-        this.open();
-      } else {
-        if (this.closing) return;
-        this.close();
-      }
+      this[val ? 'open' : 'close']();
     }
   },
 
   beforeMount() {
-    this._popupId = 'popup-' + PopupContext.plusKeyByOne('idSeed');
-    PopupManager.register(this._popupId, this);
+    this._popupId = 'popup-' + context.plusKeyByOne('idSeed');
+    context.instances[this._popupId] = this;
   },
 
   data() {
     return {
-      opening: false,
       opened: false,
-      closing: false,
-      bodyOverflow: null,
       pos: {
         x: 0,
         y: 0
@@ -71,6 +59,7 @@ export default {
         y: e.touches[0].clientY
       };
     },
+
     watchTouchMove(e) {
       const pos = this.pos;
       const dx = e.touches[0].clientX - pos.x;
@@ -95,47 +84,28 @@ export default {
         e.stopPropagation();
       }
     },
-    /**
-     * 显示popup
-     */
-    open() {
-      /* istanbul ignore if */
-      if (this.$isServer) return;
-      if (this.opened) return;
 
-      this.opening = true;
+    open() {
+      if (this.opened || this.$isServer) {
+        return;
+      }
 
       this.$emit('input', true);
 
-      const zIndex = this.zIndex;
-
-      // 如果属性中传入了`zIndex`，则覆盖`popupContext`中对应的`zIndex`
-      if (zIndex) {
-        PopupContext.setContext('zIndex', zIndex);
+      // 如果属性中传入了`zIndex`，则覆盖`context`中对应的`zIndex`
+      if (this.zIndex !== undefined) {
+        context.zIndex = this.zIndex;
       }
 
-      // 如果显示遮罩层
       if (this.overlay) {
-        if (this.closing) {
-          PopupManager.closeModal(this._popupId);
-          this.closing = false;
-        }
-        PopupManager.openModal(this._popupId, PopupManager.nextZIndex(), this.$el);
-
-        // 如果滚动时需要锁定
+        manager.openModal(this._popupId, context.plusKeyByOne('zIndex'), this.$el);
         if (this.lockOnScroll) {
-          // 将原来的`bodyOverflow`存起来
-          if (!this.bodyOverflow) {
-            this.bodyOverflow = document.body.style.overflow;
-          }
-
-          document.body.style.overflow = 'hidden';
+          document.body.classList.add('van-overflow-hidden');
         }
       }
 
-      this.$el.style.zIndex = PopupManager.nextZIndex();
+      this.$el.style.zIndex = context.plusKeyByOne('zIndex');
       this.opened = true;
-      this.opening = false;
 
       if (this.preventScroll) {
         document.addEventListener('touchstart', this.recordPosition, false);
@@ -143,23 +113,15 @@ export default {
       }
     },
 
-    /**
-     * 关闭popup
-     */
     close() {
-      if (this.closing) return;
-
-      this.closing = true;
+      if (!this.opened || this.$isServer) {
+        return;
+      }
 
       this.$emit('input', false);
 
       if (this.lockOnScroll) {
-        setTimeout(() => {
-          if (this.overlay && this.bodyOverflow !== 'hidden') {
-            document.body.style.overflow = this.bodyOverflow;
-          }
-          this.bodyOverflow = null;
-        }, 200);
+        document.body.classList.remove('van-overflow-hidden');
       }
 
       this.opened = false;
@@ -167,8 +129,7 @@ export default {
     },
 
     doAfterClose() {
-      this.closing = false;
-      PopupManager.closeModal(this._popupId);
+      manager.closeModal(this._popupId);
 
       if (this.preventScroll) {
         document.removeEventListener('touchstart', this.recordPosition, false);
@@ -178,12 +139,10 @@ export default {
   },
 
   beforeDestroy() {
-    PopupManager.deregister(this._popupId);
-    PopupManager.closeModal(this._popupId);
-
-    if (this.overlay && this.bodyOverflow !== null && this.bodyOverflow !== 'hidden') {
-      document.body.style.overflow = this.bodyOverflow;
+    context.instances[this._popupId] = null;
+    manager.closeModal(this._popupId);
+    if (this.lockOnScroll) {
+      document.body.classList.remove('van-overflow-hidden');
     }
-    this.bodyOverflow = null;
   }
 };
diff --git a/packages/mixins/popup/popup-context.js b/packages/mixins/popup/popup-context.js
index 0e0588b7b..81035f451 100644
--- a/packages/mixins/popup/popup-context.js
+++ b/packages/mixins/popup/popup-context.js
@@ -1,35 +1,15 @@
-import Vue from 'vue';
-
-const _global = Vue.prototype.$isServer ? global : window;
-
-const DEFAULT_CONTEXT = {
+const PopupContext = {
   idSeed: 1,
   zIndex: 2000,
-  hasModal: false,
   instances: {},
-  modalStack: []
-};
-
-if (!_global.popupContext) {
-  _global.popupContext = {
-    ...DEFAULT_CONTEXT
-  };
-}
-
-const PopupContext = {
-  getContext(key) {
-    return _global.popupContext[key];
-  },
-
-  setContext(key, value) {
-    _global.popupContext[key] = value;
-  },
+  modalStack: [],
 
   plusKeyByOne(key) {
-    const oldVal = +_global.popupContext[key];
-    _global.popupContext[key] = oldVal + 1;
+    return this[key]++;
+  },
 
-    return oldVal;
+  get topModal() {
+    return this.modalStack[this.modalStack.length - 1];
   }
 };
 
diff --git a/packages/mixins/popup/popup-manager.js b/packages/mixins/popup/popup-manager.js
index 4c71dfc99..62ebc8c6c 100644
--- a/packages/mixins/popup/popup-manager.js
+++ b/packages/mixins/popup/popup-manager.js
@@ -1,133 +1,68 @@
-import Vue from 'vue';
-import PopupContext from './popup-context';
-
-const getModal = function() {
-  if (Vue.prototype.$isServer) return;
-  let modalDom = PopupContext.getContext('modalDom');
-
-  if (modalDom) {
-    PopupContext.setContext('hasModal', true);
-  } else {
-    PopupContext.setContext('hasModal', false);
-
-    modalDom = document.createElement('div');
-    PopupContext.setContext('modalDom', modalDom);
-
-    modalDom.addEventListener('touchmove', function(event) {
-      event.preventDefault();
-      event.stopPropagation();
-    });
-
-    modalDom.addEventListener('click', function() {
-      PopupManager.handleOverlayClick && PopupManager.handleOverlayClick();
-    });
-  }
-
-  return modalDom;
-};
+import context from './popup-context';
 
 const PopupManager = {
-  nextZIndex() {
-    return PopupContext.plusKeyByOne('zIndex');
-  },
+  getModal() {
+    let { modal } = context;
 
-  getInstance(id) {
-    return PopupContext.getContext('instances')[id];
-  },
+    if (!modal) {
+      modal = document.createElement('div');
+      modal.classList.add('van-modal');
+      modal.addEventListener('touchmove', event => {
+        event.preventDefault();
+        event.stopPropagation();
+      });
+      modal.addEventListener('click', () => {
+        PopupManager.handleOverlayClick();
+      });
 
-  register(id, instance) {
-    if (id && instance) {
-      const instances = PopupContext.getContext('instances');
-      instances[id] = instance;
+      context.modal = modal;
     }
+
+    return modal;
   },
 
-  deregister(id) {
-    if (id) {
-      const instances = PopupContext.getContext('instances');
-      instances[id] = null;
-      delete instances[id];
-    }
-  },
-
-  /**
-   * 遮罩层点击回调，`closeOnClickOverlay`为`true`时会关闭当前`popup`
-   */
+  // close popup when click modal && closeOnClickOverlay is true
   handleOverlayClick() {
-    const modalStack = PopupContext.getContext('modalStack');
-    const topModal = modalStack[modalStack.length - 1];
-    if (!topModal) return;
-
-    const instance = PopupManager.getInstance(topModal.id);
-    if (instance && instance.closeOnClickOverlay) {
-      instance.close();
+    const { topModal } = context;
+    if (topModal) {
+      const instance = context.instances[topModal.id];
+      if (instance && instance.closeOnClickOverlay) {
+        instance.close();
+      }
     }
   },
 
   openModal(id, zIndex, dom) {
-    if (!id || zIndex === undefined) return;
+    const { modalStack } = context;
+    const exist = modalStack.some(item => item.id === id);
 
-    const modalStack = PopupContext.getContext('modalStack');
+    if (!exist) {
+      const modal = this.getModal();
+      modal.style.zIndex = zIndex;
 
-    for (let i = 0, len = modalStack.length; i < len; i++) {
-      const item = modalStack[i];
-      if (item.id === id) {
-        return;
-      }
-    }
-
-    const modalDom = getModal();
-
-    modalDom.classList.add('van-modal');
-
-    let domParentNode;
-    if (dom && dom.parentNode && dom.parentNode.nodeType !== 11) {
-      domParentNode = dom.parentNode;
-    } else {
-      domParentNode = document.body;
-    }
-    domParentNode.appendChild(modalDom);
-
-    if (zIndex) {
-      modalDom.style.zIndex = zIndex;
-    }
-    modalDom.style.display = '';
-
-    modalStack.push({ id: id, zIndex: zIndex, parentNode: domParentNode });
+      const parentNode = dom && dom.parentNode && dom.parentNode.nodeType !== 11 ? dom.parentNode : document.body;
+      parentNode.appendChild(modal);
+      modalStack.push({ id, zIndex, parentNode });
+    };
   },
 
   closeModal(id) {
-    const modalStack = PopupContext.getContext('modalStack');
-    const modalDom = getModal();
+    const { modalStack } = context;
 
-    if (modalStack.length > 0) {
-      const topItem = modalStack[modalStack.length - 1];
-      if (topItem.id === id) {
+    if (modalStack.length) {
+      if (context.topModal.id === id) {
+        const modal = this.getModal();
         modalStack.pop();
-        if (modalStack.length > 0) {
-          modalDom.style.zIndex = modalStack[modalStack.length - 1].zIndex;
-          modalDom.parentNode.removeChild(modalDom);
-          const currModalParent = modalStack[0].parentNode;
-          currModalParent && currModalParent.appendChild(modalDom);
+        modal.parentNode.removeChild(modal);
+        if (modalStack.length) {
+          const { topModal } = context;
+          modal.style.zIndex = topModal.zIndex;
+          topModal.parentNode.appendChild(modal);
         }
       } else {
-        for (let i = modalStack.length - 1; i >= 0; i--) {
-          if (modalStack[i].id === id) {
-            modalStack.splice(i, 1);
-            break;
-          }
-        }
+        context.modalStack = modalStack.filter(item => item.id !== id);
       }
     }
-
-    if (modalStack.length === 0) {
-      setTimeout(() => {
-        if (modalDom.parentNode) modalDom.parentNode.removeChild(modalDom);
-
-        modalDom.style.display = 'none';
-        this.modalDom = null;
-      }, 200);
-    }
   }
 };
 
diff --git a/packages/popup/index.vue b/packages/popup/index.vue
index 7fe9dbf7a..3a39f2e27 100644
--- a/packages/popup/index.vue
+++ b/packages/popup/index.vue
@@ -1,6 +1,6 @@
 <template>
   <transition :name="currentTransition">
-    <div v-show="currentValue" class="van-popup" :class="[position ? 'van-popup--' + position : '']">
+    <div v-show="value" class="van-popup" :class="[position ? 'van-popup--' + position : '']">
       <slot></slot>
     </div>
   </transition>
@@ -8,29 +8,23 @@
 
 <script>
 import Popup from '../mixins/popup';
+
 export default {
   name: 'van-popup',
 
   mixins: [Popup],
 
   props: {
+    transition: String,
     overlay: {
       default: true
     },
-
     lockOnScroll: {
       default: false
     },
-
     closeOnClickOverlay: {
       default: true
     },
-
-    transition: {
-      type: String,
-      default: 'popup-slide'
-    },
-
     position: {
       type: String,
       default: ''
@@ -38,31 +32,15 @@ export default {
   },
 
   data() {
+    const transition = this.transition || (this.position === '' ? 'popup-fade' : `popup-slide-${this.position}`);
     return {
       currentValue: false,
-      currentTransition: this.transition
+      currentTransition: transition
     };
   },
 
-  watch: {
-    currentValue(val) {
-      this.$emit('input', val);
-    },
-
-    value(val) {
-      this.currentValue = val;
-    }
-  },
-
-  beforeMount() {
-    if (this.transition !== 'popup-fade') {
-      this.currentTransition = `popup-slide-${this.position}`;
-    }
-  },
-
   mounted() {
     if (this.value) {
-      this.currentValue = true;
       this.open();
     }
   }
diff --git a/packages/vant-css/src/common/animation.css b/packages/vant-css/src/common/animation.css
index 070c8e1fc..da7cdfd03 100644
--- a/packages/vant-css/src/common/animation.css
+++ b/packages/vant-css/src/common/animation.css
@@ -10,6 +10,15 @@
   }
 }
 
+@keyframes van-fade-in {
+  from {
+    opacity: 0;
+  }
+  to {
+    opacity: 1;
+  }
+}
+
 .van-slide-bottom {
   &-enter-active {
     animation: van-slide-bottom-enter .3s both ease;
diff --git a/packages/vant-css/src/popup.css b/packages/vant-css/src/popup.css
index 85a2c3201..dd21a546d 100644
--- a/packages/vant-css/src/popup.css
+++ b/packages/vant-css/src/popup.css
@@ -8,7 +8,11 @@
     top: 0;
     left: 0;
     background-color: rgba(0, 0, 0, 0.7);
-    transition: .5s ease-out;
+    animation: van-fade-in .3s both;
+  }
+
+  &-overflow-hidden {
+    overflow: hidden !important;
   }
 
   &-popup {
diff --git a/packages/waterfall/directive.js b/packages/waterfall/directive.js
index c25f53ea3..16d2e4902 100644
--- a/packages/waterfall/directive.js
+++ b/packages/waterfall/directive.js
@@ -6,6 +6,11 @@ const OFFSET = 300;
 // 绑定事件到元素上
 // 读取基本的控制变量
 function doBindEvent() {
+  if (this.el[CONTEXT].binded) {
+    return;
+  }
+  this.el[CONTEXT].binded = true;
+
   this.scrollEventListener = Utils.debounce(handleScrollEvent.bind(this), 200);
   this.scrollEventTarget = Utils.getScrollEventTarget(this.el);
 
@@ -52,7 +57,7 @@ function handleScrollEvent() {
     needLoadMoreToLower = elementBottom - targetVisibleHeight < this.offset;
   }
   if (needLoadMoreToLower) {
-    this.cb['lower'] && this.cb['lower']({ target: scrollEventTarget, top: targetScrollTop });
+    this.cb.lower && this.cb.lower({ target: scrollEventTarget, top: targetScrollTop });
   }
 
   // 判断是否到了顶
@@ -64,7 +69,7 @@ function handleScrollEvent() {
     needLoadMoreToUpper = elementTop + this.offset > 0;
   }
   if (needLoadMoreToUpper) {
-    this.cb['upper'] && this.cb['upper']({ target: scrollEventTarget, top: targetScrollTop });
+    this.cb.upper && this.cb.upper({ target: scrollEventTarget, top: targetScrollTop });
   }
 }
 
diff --git a/test/unit/specs/popup.spec.js b/test/unit/specs/popup.spec.js
index 250109f50..dc13fad46 100644
--- a/test/unit/specs/popup.spec.js
+++ b/test/unit/specs/popup.spec.js
@@ -27,12 +27,11 @@ describe('Popup', () => {
     });
 
     const eventStub = sinon.stub(wrapper.vm, '$emit');
-    expect(wrapper.data().currentValue).to.be.false;
+    expect(wrapper.element.style.display).to.equal('none');
 
     wrapper.vm.value = true;
-    wrapper.update();
     wrapper.vm.$nextTick(() => {
-      expect(wrapper.data().currentValue).to.be.true;
+      expect(wrapper.element.style.display).to.equal('');
       expect(eventStub.calledWith('input'));
       done();
     });
@@ -45,7 +44,7 @@ describe('Popup', () => {
       }
     });
 
-    expect(wrapper.data().currentValue).to.be.true;
+    expect(wrapper.element.style.display).to.equal('');
   });
 
   it('create a popup-fade transition popup', () => {
@@ -70,7 +69,7 @@ describe('Popup', () => {
     expect(wrapper.hasClass('van-popup')).to.be.true;
 
     setTimeout(() => {
-      expect(wrapper.data().currentValue).to.be.true;
+      expect(wrapper.element.style.display).to.equal('');
       wrapper.vm.value = false;
       triggerTouch(document, 'touchstart', 0, 0);
       triggerTouch(document, 'touchmove', 0, 10);
@@ -78,7 +77,7 @@ describe('Popup', () => {
       triggerTouch(document, 'touchmove', 0, -30);
 
       setTimeout(() => {
-        expect(wrapper.data().currentValue).to.be.false;
+        expect(wrapper.element.style.display).to.equal('none');
         done();
       }, 300);
     }, 300);
diff --git a/yarn.lock b/yarn.lock
index 8883669d4..7eb42db36 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1219,6 +1219,10 @@ caniuse-lite@^1.0.30000744:
   version "1.0.30000746"
   resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000746.tgz#c64f95a3925cfd30207a308ed76c1ae96ea09ea0"
 
+caseless@~0.11.0:
+  version "0.11.0"
+  resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.11.0.tgz#715b96ea9841593cc33067923f5ec60ebda4f7d7"
+
 caseless@~0.12.0:
   version "0.12.0"
   resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
@@ -1411,12 +1415,12 @@ code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
 
-codecov@^2.2.0:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/codecov/-/codecov-2.3.0.tgz#ad25a2c6e0442d13740d9d4ddbb9a3e2714330f4"
+codecov@^2.3.1:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/codecov/-/codecov-2.3.1.tgz#7dda945cd58a1f6081025b5b03ee01a2ef20f86e"
   dependencies:
     argv "0.0.2"
-    request "2.81.0"
+    request "2.77.0"
     urlgrey "0.4.4"
 
 color-convert@^1.3.0, color-convert@^1.9.0:
@@ -3365,6 +3369,15 @@ har-schema@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/har-schema/-/har-schema-2.0.0.tgz#a94c2224ebcac04782a0d9035521f24735b7ec92"
 
+har-validator@~2.0.6:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/har-validator/-/har-validator-2.0.6.tgz#cdcbc08188265ad119b6a5a7c8ab70eecfb5d27d"
+  dependencies:
+    chalk "^1.1.1"
+    commander "^2.9.0"
+    is-my-json-valid "^2.12.4"
+    pinkie-promise "^2.0.0"
+
 har-validator@~4.2.1:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/har-validator/-/har-validator-4.2.1.tgz#33481d0f1bbff600dd203d75812a6a5fba002e2a"
@@ -3851,7 +3864,7 @@ is-glob@^4.0.0:
   dependencies:
     is-extglob "^2.1.1"
 
-is-my-json-valid@^2.10.0:
+is-my-json-valid@^2.10.0, is-my-json-valid@^2.12.4:
   version "2.16.1"
   resolved "https://registry.yarnpkg.com/is-my-json-valid/-/is-my-json-valid-2.16.1.tgz#5a846777e2c2620d1e69104e5d3a03b1f6088f11"
   dependencies:
@@ -5056,6 +5069,10 @@ node-pre-gyp@^0.6.36:
     tar "^2.2.1"
     tar-pack "^3.4.0"
 
+node-uuid@~1.4.7:
+  version "1.4.8"
+  resolved "https://registry.yarnpkg.com/node-uuid/-/node-uuid-1.4.8.tgz#b040eb0923968afabf8d32fb1f17f1167fdab907"
+
 node-watch@^0.5.5:
   version "0.5.5"
   resolved "https://registry.yarnpkg.com/node-watch/-/node-watch-0.5.5.tgz#34865ba8bc6861ab086acdcc3403e40ed55c3274"
@@ -5731,9 +5748,9 @@ postcss-load-plugins@^2.3.0:
     cosmiconfig "^2.1.1"
     object-assign "^4.1.0"
 
-postcss-loader@^2.0.6:
-  version "2.0.7"
-  resolved "https://registry.yarnpkg.com/postcss-loader/-/postcss-loader-2.0.7.tgz#4d2da1489cee0a14f72c0d9440c9ee7eded34345"
+postcss-loader@^2.0.8:
+  version "2.0.8"
+  resolved "https://registry.yarnpkg.com/postcss-loader/-/postcss-loader-2.0.8.tgz#8c67ddb029407dfafe684a406cfc16bad2ce0814"
   dependencies:
     loader-utils "^1.1.0"
     postcss "^6.0.0"
@@ -6120,6 +6137,10 @@ qs@6.5.1, qs@~6.5.1:
   version "6.5.1"
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.1.tgz#349cdf6eef89ec45c12d7d5eb3fc0c870343a6d8"
 
+qs@~6.3.0:
+  version "6.3.2"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.3.2.tgz#e75bd5f6e268122a2a0e0bda630b2550c166502c"
+
 qs@~6.4.0:
   version "6.4.0"
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.4.0.tgz#13e26d28ad6b0ffaa91312cd3bf708ed351e7233"
@@ -6406,6 +6427,31 @@ request-progress@~2.0.1:
   dependencies:
     throttleit "^1.0.0"
 
+request@2.77.0:
+  version "2.77.0"
+  resolved "https://registry.yarnpkg.com/request/-/request-2.77.0.tgz#2b00d82030ededcc97089ffa5d8810a9c2aa314b"
+  dependencies:
+    aws-sign2 "~0.6.0"
+    aws4 "^1.2.1"
+    caseless "~0.11.0"
+    combined-stream "~1.0.5"
+    extend "~3.0.0"
+    forever-agent "~0.6.1"
+    form-data "~2.1.1"
+    har-validator "~2.0.6"
+    hawk "~3.1.3"
+    http-signature "~1.1.0"
+    is-typedarray "~1.0.0"
+    isstream "~0.1.2"
+    json-stringify-safe "~5.0.1"
+    mime-types "~2.1.7"
+    node-uuid "~1.4.7"
+    oauth-sign "~0.8.1"
+    qs "~6.3.0"
+    stringstream "~0.0.4"
+    tough-cookie "~2.3.0"
+    tunnel-agent "~0.4.1"
+
 request@2.81.0, request@~2.81.0:
   version "2.81.0"
   resolved "https://registry.yarnpkg.com/request/-/request-2.81.0.tgz#c6928946a0e06c5f8d6f8a9333469ffda46298a0"
@@ -7241,6 +7287,10 @@ tunnel-agent@^0.6.0:
   dependencies:
     safe-buffer "^5.0.1"
 
+tunnel-agent@~0.4.1:
+  version "0.4.3"
+  resolved "https://registry.yarnpkg.com/tunnel-agent/-/tunnel-agent-0.4.3.tgz#6373db76909fe570e08d73583365ed828a74eeeb"
+
 tweetnacl@^0.14.3, tweetnacl@~0.14.0:
   version "0.14.5"
   resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
@@ -7551,18 +7601,18 @@ vue-loader@^13.3.0:
     vue-style-loader "^3.0.0"
     vue-template-es2015-compiler "^1.6.0"
 
-vue-markdown-loader@^2.1.0:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/vue-markdown-loader/-/vue-markdown-loader-2.2.1.tgz#becf0c7455589eb27189fe78a9d5a283bb7acc00"
+vue-markdown-loader@^2.2.2:
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/vue-markdown-loader/-/vue-markdown-loader-2.2.2.tgz#7bdac31dc0e44571bec8c4632e14fc2ba98fb65e"
   dependencies:
     cheerio "^0.20.0"
     highlight.js "^9.4.0"
     loader-utils "^0.2.15"
     markdown-it "^6.0.5"
 
-vue-router@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/vue-router/-/vue-router-3.0.0.tgz#458092ad5d8e3b8d26661cfbcbf46c120f8ea1ae"
+vue-router@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/vue-router/-/vue-router-3.0.1.tgz#d9b05ad9c7420ba0f626d6500d693e60092cc1e9"
 
 vue-sfc-compiler@^0.0.2:
   version "0.0.2"
@@ -7585,13 +7635,20 @@ vue-template-compiler@^2.4.2:
     de-indent "^1.0.2"
     he "^1.1.0"
 
+vue-template-compiler@^2.5.2:
+  version "2.5.2"
+  resolved "https://registry.yarnpkg.com/vue-template-compiler/-/vue-template-compiler-2.5.2.tgz#6f198ebc677b8f804315cd33b91e849315ae7177"
+  dependencies:
+    de-indent "^1.0.2"
+    he "^1.1.0"
+
 vue-template-es2015-compiler@^1.5.3, vue-template-es2015-compiler@^1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/vue-template-es2015-compiler/-/vue-template-es2015-compiler-1.6.0.tgz#dc42697133302ce3017524356a6c61b7b69b4a18"
 
-vue@^2.4.2:
-  version "2.4.4"
-  resolved "https://registry.yarnpkg.com/vue/-/vue-2.4.4.tgz#ea9550b96a71465fd2b8b17b61673b3561861789"
+vue@^2.5.2:
+  version "2.5.2"
+  resolved "https://registry.yarnpkg.com/vue/-/vue-2.5.2.tgz#fd367a87bae7535e47f9dc5c9ec3b496e5feb5a4"
 
 watchpack@^1.4.0:
   version "1.4.0"
@@ -7637,9 +7694,9 @@ webpack-dev-middleware@^1.0.11, webpack-dev-middleware@^1.11.0:
     range-parser "^1.0.3"
     time-stamp "^2.0.0"
 
-webpack-dev-server@^2.7.1:
-  version "2.9.1"
-  resolved "https://registry.yarnpkg.com/webpack-dev-server/-/webpack-dev-server-2.9.1.tgz#7ac9320b61b00eb65b2109f15c82747fc5b93585"
+webpack-dev-server@^2.9.2:
+  version "2.9.2"
+  resolved "https://registry.yarnpkg.com/webpack-dev-server/-/webpack-dev-server-2.9.2.tgz#0fbab915701d25a905a60e1e784df19727da800f"
   dependencies:
     ansi-html "0.0.7"
     array-includes "^3.0.3"