update the master branch to the latest

src/components/breadcrumb/breadcrumb-item.vue

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+<template>
+    <span>
+        <a
+            v-if="to"
+            :href="linkUrl"
+            :target="target"
+            :class="linkClasses"
+            @click.exact="handleCheckClick($event, false)"
+            @click.ctrl="handleCheckClick($event, true)"
+            @click.meta="handleCheckClick($event, true)">
+            <slot></slot>
+        </a>
+        <span v-else :class="linkClasses">
+            <slot></slot>
+        </span>
+        <span :class="separatorClasses" v-html="separator" v-if="!showSeparator"></span>
+        <span :class="separatorClasses" v-else>
+            <slot name="separator"></slot>
+        </span>
+    </span>
+</template>
+<script>
+    import mixinsLink from '../../mixins/link';
+    const prefixCls = 'ivu-breadcrumb-item';
+
+    export default {
+        name: 'BreadcrumbItem',
+        mixins: [ mixinsLink ],
+        props: {
+
+        },
+        data () {
+            return {
+                separator: '',
+                showSeparator: false
+            };
+        },
+        computed: {
+            linkClasses () {
+                return `${prefixCls}-link`;
+            },
+            separatorClasses () {
+                return `${prefixCls}-separator`;
+            }
+        },
+        mounted () {
+            this.showSeparator = this.$slots.separator !== undefined;
+        }
+    };
+</script>

src/components/breadcrumb/breadcrumb.vue

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+<template>
+    <div :class="classes">
+        <slot></slot>
+    </div>
+</template>
+<script>
+    const prefixCls = 'ivu-breadcrumb';
+
+    export default {
+        name: 'Breadcrumb',
+        props: {
+            separator: {
+                type: String,
+                default: '/'
+            }
+        },
+        computed: {
+            classes () {
+                return `${prefixCls}`;
+            }
+        },
+        mounted () {
+            this.updateChildren();
+        },
+        updated () {
+            this.$nextTick(() => {
+                this.updateChildren();
+            });
+        },
+        methods: {
+            updateChildren () {
+                this.$children.forEach((child) => {
+                    child.separator = this.separator;
+                });
+            }
+        },
+        watch: {
+            separator () {
+                this.updateChildren();
+            }
+        }
+    };
+</script>

src/components/breadcrumb/index.js

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+import Breadcrumb from './breadcrumb.vue';
+import BreadcrumbItem from './breadcrumb-item.vue';
+
+Breadcrumb.Item = BreadcrumbItem;
+export default Breadcrumb;