diff --git a/package.json b/package.json
index 7cc2055..a76d65b 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,6 @@
     "docs:build": "vuepress build docs"
   },
   "devDependencies": {
-    "vuepress": "1.1.0"
+    "vuepress": "1.2.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 83a9da1..40e937a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -809,18 +809,18 @@
     source-map "~0.6.1"
     vue-template-es2015-compiler "^1.9.0"
 
-"@vuepress/core@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@vuepress/core/-/core-1.1.0.tgz#32fd2b65a4613085cbd2b812bf67afe3a037dc65"
-  integrity sha512-qC+R9kdTpui9QjQGUXUsmfAbToWOnoYjP2AJqMT/RsKUhQsXAIMe2Z0L/Vw2Z3bmlTUq26v+B1zlFgYzGuyIEQ==
+"@vuepress/core@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@vuepress/core/-/core-1.2.0.tgz#8e0c636b7f8676202fdd1ecfbe31bfe245dab2a8"
+  integrity sha512-ZIsUkQIF+h4Yk6q4okoRnRwRhcYePu/kNiL0WWPDGycjai8cFqFjLDP/tJjfTKXmn9A62j2ETjSwaiMxCtDkyw==
   dependencies:
     "@babel/core" "^7.0.0"
     "@vue/babel-preset-app" "^3.1.1"
-    "@vuepress/markdown" "^1.1.0"
-    "@vuepress/markdown-loader" "^1.1.0"
-    "@vuepress/plugin-last-updated" "^1.1.0"
-    "@vuepress/plugin-register-components" "^1.1.0"
-    "@vuepress/shared-utils" "^1.1.0"
+    "@vuepress/markdown" "^1.2.0"
+    "@vuepress/markdown-loader" "^1.2.0"
+    "@vuepress/plugin-last-updated" "^1.2.0"
+    "@vuepress/plugin-register-components" "^1.2.0"
+    "@vuepress/shared-utils" "^1.2.0"
     autoprefixer "^9.5.1"
     babel-loader "^8.0.4"
     cache-loader "^3.0.0"
@@ -839,34 +839,34 @@
     postcss-safe-parser "^4.0.1"
     toml "^3.0.0"
     url-loader "^1.0.1"
-    vue "^2.5.16"
-    vue-loader "^15.2.4"
-    vue-router "^3.0.2"
-    vue-server-renderer "^2.5.16"
-    vue-template-compiler "^2.5.16"
+    vue "^2.6.10"
+    vue-loader "^15.7.1"
+    vue-router "^3.1.3"
+    vue-server-renderer "^2.6.10"
+    vue-template-compiler "^2.6.10"
     vuepress-html-webpack-plugin "^3.2.0"
-    vuepress-plugin-container "^2.0.0"
+    vuepress-plugin-container "^2.0.2"
     webpack "^4.8.1"
     webpack-chain "^4.6.0"
     webpack-dev-server "^3.5.1"
     webpack-merge "^4.1.2"
     webpackbar "3.2.0"
 
-"@vuepress/markdown-loader@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@vuepress/markdown-loader/-/markdown-loader-1.1.0.tgz#ab8ac2d286c255f9fa39ecb2f4542053314825ac"
-  integrity sha512-X4+E9kbFt3OSXKxtQbNxeuzxbXdSMhXz8tliUW+/+1zx7RGn1ApcR0x7Y6/irESUgZ+GxOT3jyiCDZA4usHhLA==
+"@vuepress/markdown-loader@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@vuepress/markdown-loader/-/markdown-loader-1.2.0.tgz#f8972014616b4ab46a99c9aaac2dd414d437411c"
+  integrity sha512-gOZzoHjfp/W6t+qKBRdbHS/9TwRnNuhY7V+yFzxofNONFHQULofIN/arG+ptYc2SuqJ541jqudNQW+ldHNMC2w==
   dependencies:
-    "@vuepress/markdown" "^1.1.0"
+    "@vuepress/markdown" "^1.2.0"
     loader-utils "^1.1.0"
     lru-cache "^5.1.1"
 
-"@vuepress/markdown@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@vuepress/markdown/-/markdown-1.1.0.tgz#f9095c91019d21dbc3daedfd3773c6d5c29117ec"
-  integrity sha512-O2ivsIkUrSUPDx+9N43XKSOGtprV4G1k6/4o3wZjjCn6GXYRsRE906cFDlbryHxQ49Z7Yfz3gyZIGMnThxLo/w==
+"@vuepress/markdown@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@vuepress/markdown/-/markdown-1.2.0.tgz#7c457e0fab52ef8ac4dd1898ae450bc3aec30746"
+  integrity sha512-RLRQmTu5wJbCO4Qv+J0K53o5Ew7nAGItLwWyzCbIUB6pRsya3kqSCViWQVlKlS53zFTmRHuAC9tJMRdzly3mCA==
   dependencies:
-    "@vuepress/shared-utils" "^1.1.0"
+    "@vuepress/shared-utils" "^1.2.0"
     markdown-it "^8.4.1"
     markdown-it-anchor "^5.0.2"
     markdown-it-chain "^1.3.0"
@@ -874,43 +874,43 @@
     markdown-it-table-of-contents "^0.4.0"
     prismjs "^1.13.0"
 
-"@vuepress/plugin-active-header-links@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@vuepress/plugin-active-header-links/-/plugin-active-header-links-1.1.0.tgz#cd62c1712040676035f34fed16a088e1c08811d8"
-  integrity sha512-sa5ySYl/kTyr1AMakeW375wWs1aQ6psiJiSFclxkGvxcuGZ89F27ELvd43DKaETAlH90LcoE/j7TXMA895qXmw==
+"@vuepress/plugin-active-header-links@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@vuepress/plugin-active-header-links/-/plugin-active-header-links-1.2.0.tgz#46495c89e51a95e57139be007dffbcae4b229260"
+  integrity sha512-vdi7l96pElJvEmcx6t9DWJNH25TIurS8acjN3+b7o4NzdaszFn5j6klN6WtI4Z+5BVDrxHP5W1F3Ebw8SZyupA==
   dependencies:
-    lodash.throttle "^4.1.1"
+    lodash.debounce "^4.0.8"
 
-"@vuepress/plugin-last-updated@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@vuepress/plugin-last-updated/-/plugin-last-updated-1.1.0.tgz#65f2de734f3744026297b4667f3b5276ef99fd06"
-  integrity sha512-x2SaAKWk26RK9O0slnZ55eSlBFYdYjFgqkRIfaOf4f2biWqTa9nzaIbvjzvcx3AZKlOWMl81KRwybhDL8E9OsA==
+"@vuepress/plugin-last-updated@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@vuepress/plugin-last-updated/-/plugin-last-updated-1.2.0.tgz#7b34065b793848b0482a222b7a6f1b7df3668cdc"
+  integrity sha512-j4uZb/MXDyG+v9QCG3T/rkiaOhC/ib7NKCt1cjn3GOwvWTDmB5UZm9EBhUpbDNrBgxW+SaHOe3kMVNO8bGOTGw==
   dependencies:
     cross-spawn "^6.0.5"
 
-"@vuepress/plugin-nprogress@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@vuepress/plugin-nprogress/-/plugin-nprogress-1.1.0.tgz#ca7106adc7016ed0d90a22555066c11da597ef59"
-  integrity sha512-XhUyAO+mzYFOFupX/pNlPbv0bT596Lk000Q2PhWfRliwUzpUd0/u5Z6B6fasIVj01Yqih/gAGOZpr2ZwSCNJYw==
+"@vuepress/plugin-nprogress@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@vuepress/plugin-nprogress/-/plugin-nprogress-1.2.0.tgz#ff6166946a0b118a39a562acb57983529afce4d2"
+  integrity sha512-0apt3Dp6XVCOkLViX6seKSEJgARihi+pX3/r8j8ndFp9Y+vmgLFZnQnGE5iKNi1ty+A6PZOK0RQcBjwTAU4pAw==
   dependencies:
     nprogress "^0.2.0"
 
-"@vuepress/plugin-register-components@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@vuepress/plugin-register-components/-/plugin-register-components-1.1.0.tgz#42ea75bcad3fb562fbb86c424136f86e13641162"
-  integrity sha512-HXGdcmBdGHLhI8KHr09GnnZEzgCuaIQx1WBqDNfbigSVKEx910L56ej+Whl6VFd7D0uOLUlW4kb9ELM0sjJpKg==
+"@vuepress/plugin-register-components@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@vuepress/plugin-register-components/-/plugin-register-components-1.2.0.tgz#95aa0e0af94b2758b26ab98814c43b0f7bcd502b"
+  integrity sha512-C32b8sbGtDEX8I3SUUKS/w2rThiRFiKxmzNcJD996me7VY/4rgmZ8CxGtb6G9wByVoK0UdG1SOkrgOPdSCm80A==
   dependencies:
-    "@vuepress/shared-utils" "^1.1.0"
+    "@vuepress/shared-utils" "^1.2.0"
 
-"@vuepress/plugin-search@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@vuepress/plugin-search/-/plugin-search-1.1.0.tgz#3b7a344a7df1bab27f10a46e6b57680c8f5d4c7e"
-  integrity sha512-GoxvcM65ZAZycnsoZJ/wx9F3hXKzzJQdS7lNnAuHrvCheT5tVO1wwMumVP/unZU/59zCQ1PiyReYntLSp5bXVg==
+"@vuepress/plugin-search@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@vuepress/plugin-search/-/plugin-search-1.2.0.tgz#0b27c467b7fd42bd4d9e32de0fe2fb81a24bd311"
+  integrity sha512-QU3JfnMfImDAArbJOVH1q1iCDE5QrT99GLpNGo6KQYZWqY1TWAbgyf8C2hQdaI03co1lkU2Wn/iqzHJ5WHlueg==
 
-"@vuepress/shared-utils@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@vuepress/shared-utils/-/shared-utils-1.1.0.tgz#9d220ffe54f2d698c56ca5348ba2cb9dd72800da"
-  integrity sha512-zvYfejRRl7y3oavLvAe7dHfCu4XewKnhsyUQ7to6tfxVNoEqzhrl5HcCBwcLlphj792tvTAth5QkVegTgGfsaw==
+"@vuepress/shared-utils@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@vuepress/shared-utils/-/shared-utils-1.2.0.tgz#8d9ab40c24f75f027ef32c2ad0169f0f08e949fa"
+  integrity sha512-wo5Ng2/xzsmIYCzvWxgLFlDBp7FkmJp2shAkbSurLNAh1vixhs0+LyDxsk01+m34ktJSp9rTUUsm6khw/Fvo0w==
   dependencies:
     chalk "^2.3.2"
     diacritics "^1.3.0"
@@ -922,19 +922,20 @@
     semver "^6.0.0"
     upath "^1.1.0"
 
-"@vuepress/theme-default@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@vuepress/theme-default/-/theme-default-1.1.0.tgz#915c97bb69985d6fccd815f829532d67d828e10a"
-  integrity sha512-U+kFHakSBEXFAdfItyeCbP//q2hm9R8+vnTFjbMMVgRZ2SHPnDUC/7WWGoEUzfEpFHHPrG1OzC9iI/o5v8p5AQ==
+"@vuepress/theme-default@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@vuepress/theme-default/-/theme-default-1.2.0.tgz#3303af21a00031a3482ed1c494508234f545cbf1"
+  integrity sha512-mJxAMYQQv4OrGFsArMlONu8RpCzPUVx81dumkyTT4ay5PXAWTj+WDeFQLOT3j0g9QrDJGnHhbiw2aS+R/0WUyQ==
   dependencies:
-    "@vuepress/plugin-active-header-links" "^1.1.0"
-    "@vuepress/plugin-nprogress" "^1.1.0"
-    "@vuepress/plugin-search" "^1.1.0"
+    "@vuepress/plugin-active-header-links" "^1.2.0"
+    "@vuepress/plugin-nprogress" "^1.2.0"
+    "@vuepress/plugin-search" "^1.2.0"
     docsearch.js "^2.5.2"
     lodash "^4.17.15"
     stylus "^0.54.5"
     stylus-loader "^3.0.2"
-    vuepress-plugin-container "^2.0.0"
+    vuepress-plugin-container "^2.0.2"
+    vuepress-plugin-smooth-scroll "^0.0.3"
 
 "@webassemblyjs/ast@1.8.5":
   version "1.8.5"
@@ -4208,6 +4209,11 @@ lodash.clonedeep@^4.5.0:
   resolved "https://registry.yarnpkg.com/lodash.clonedeep/-/lodash.clonedeep-4.5.0.tgz#e23f3f9c4f8fbdde872529c1071857a086e5ccef"
   integrity sha1-4j8/nE+Pvd6HJSnBBxhXoIblzO8=
 
+lodash.debounce@^4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/lodash.debounce/-/lodash.debounce-4.0.8.tgz#82d79bff30a67c4005ffd5e2515300ad9ca4d7af"
+  integrity sha1-gteb/zCmfEAF/9XiUVMArZyk168=
+
 lodash.kebabcase@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/lodash.kebabcase/-/lodash.kebabcase-4.1.1.tgz#8489b1cb0d29ff88195cceca448ff6d6cc295c36"
@@ -4233,11 +4239,6 @@ lodash.templatesettings@^4.0.0:
   dependencies:
     lodash._reinterpolate "^3.0.0"
 
-lodash.throttle@^4.1.1:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/lodash.throttle/-/lodash.throttle-4.1.1.tgz#c23e91b710242ac70c37f1e1cda9274cc39bf2f4"
-  integrity sha1-wj6RtxAkKscMN/HhzaknTMOb8vQ=
-
 lodash.uniq@^4.5.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
@@ -6202,6 +6203,11 @@ slash@^2.0.0:
   resolved "https://registry.yarnpkg.com/slash/-/slash-2.0.0.tgz#de552851a1759df3a8f206535442f5ec4ddeab44"
   integrity sha512-ZYKh3Wh2z1PpEXWr0MpSBZ0V6mZHAQfYevttO11c51CaWjGTaadiKZ+wVt1PbMlDV5qhMFslpZCemhwOK7C89A==
 
+smoothscroll-polyfill@^0.4.3:
+  version "0.4.4"
+  resolved "https://registry.yarnpkg.com/smoothscroll-polyfill/-/smoothscroll-polyfill-0.4.4.tgz#3a259131dc6930e6ca80003e1cb03b603b69abf8"
+  integrity sha512-TK5ZA9U5RqCwMpfoMq/l1mrH0JAR7y7KRvOBx0n2869aLxch+gT9GhN3yUfjiw+d/DiF1mKo14+hd62JyMmoBg==
+
 snapdragon-node@^2.0.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/snapdragon-node/-/snapdragon-node-2.1.1.tgz#6c175f86ff14bdb0724563e8f3c1b021a286853b"
@@ -7000,7 +7006,7 @@ vue-hot-reload-api@^2.3.0:
   resolved "https://registry.yarnpkg.com/vue-hot-reload-api/-/vue-hot-reload-api-2.3.4.tgz#532955cc1eb208a3d990b3a9f9a70574657e08f2"
   integrity sha512-BXq3jwIagosjgNVae6tkHzzIk6a8MHFtzAdwhnV5VlvPTFxDCvIttgSiHWjdGoTJvXtmRu5HacExfdarRcFhog==
 
-vue-loader@^15.2.4:
+vue-loader@^15.7.1:
   version "15.7.1"
   resolved "https://registry.yarnpkg.com/vue-loader/-/vue-loader-15.7.1.tgz#6ccacd4122aa80f69baaac08ff295a62e3aefcfd"
   integrity sha512-fwIKtA23Pl/rqfYP5TSGK7gkEuLhoTvRYW+TU7ER3q9GpNLt/PjG5NLv3XHRDiTg7OPM1JcckBgds+VnAc+HbA==
@@ -7011,12 +7017,12 @@ vue-loader@^15.2.4:
     vue-hot-reload-api "^2.3.0"
     vue-style-loader "^4.1.0"
 
-vue-router@^3.0.2:
+vue-router@^3.1.3:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/vue-router/-/vue-router-3.1.3.tgz#e6b14fabc0c0ee9fda0e2cbbda74b350e28e412b"
   integrity sha512-8iSa4mGNXBjyuSZFCCO4fiKfvzqk+mhL0lnKuGcQtO1eoj8nq3CmbEG8FwK5QqoqwDgsjsf1GDuisDX4cdb/aQ==
 
-vue-server-renderer@^2.5.16:
+vue-server-renderer@^2.6.10:
   version "2.6.10"
   resolved "https://registry.yarnpkg.com/vue-server-renderer/-/vue-server-renderer-2.6.10.tgz#cb2558842ead360ae2ec1f3719b75564a805b375"
   integrity sha512-UYoCEutBpKzL2fKCwx8zlRtRtwxbPZXKTqbl2iIF4yRZUNO/ovrHyDAJDljft0kd+K0tZhN53XRHkgvCZoIhug==
@@ -7038,7 +7044,7 @@ vue-style-loader@^4.1.0:
     hash-sum "^1.0.2"
     loader-utils "^1.0.2"
 
-vue-template-compiler@^2.5.16:
+vue-template-compiler@^2.6.10:
   version "2.6.10"
   resolved "https://registry.yarnpkg.com/vue-template-compiler/-/vue-template-compiler-2.6.10.tgz#323b4f3495f04faa3503337a82f5d6507799c9cc"
   integrity sha512-jVZkw4/I/HT5ZMvRnhv78okGusqe0+qH2A0Em0Cp8aq78+NK9TII263CDVz2QXZsIT+yyV/gZc/j/vlwa+Epyg==
@@ -7051,7 +7057,7 @@ vue-template-es2015-compiler@^1.9.0:
   resolved "https://registry.yarnpkg.com/vue-template-es2015-compiler/-/vue-template-es2015-compiler-1.9.1.tgz#1ee3bc9a16ecbf5118be334bb15f9c46f82f5825"
   integrity sha512-4gDntzrifFnCEvyoO8PqyJDmguXgVPxKiIxrBKjIowvL9l+N66196+72XVYR8BBf1Uv1Fgt3bGevJ+sEmxfZzw==
 
-vue@^2.5.16:
+vue@^2.6.10:
   version "2.6.10"
   resolved "https://registry.yarnpkg.com/vue/-/vue-2.6.10.tgz#a72b1a42a4d82a721ea438d1b6bf55e66195c637"
   integrity sha512-ImThpeNU9HbdZL3utgMCq0oiMzAkt1mcgy3/E6zWC/G6AaQoeuFdsl9nDhTDU3X1R6FK7nsIUuRACVcjI+A2GQ==
@@ -7069,20 +7075,27 @@ vuepress-html-webpack-plugin@^3.2.0:
     toposort "^1.0.0"
     util.promisify "1.0.0"
 
-vuepress-plugin-container@^2.0.0:
+vuepress-plugin-container@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/vuepress-plugin-container/-/vuepress-plugin-container-2.0.2.tgz#3489cc732c7a210b31f202556e1346125dffeb73"
   integrity sha512-SrGYYT7lkie7xlIlAVhn+9sDW42MytNCoxWL/2uDr+q9wZA4h1uYlQvfc2DVjy+FsM9PPPSslkeo/zCpYVY82g==
   dependencies:
     markdown-it-container "^2.0.0"
 
-vuepress@1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/vuepress/-/vuepress-1.1.0.tgz#ca0d787d93188b2fd05820a650d7e3643c9e7675"
-  integrity sha512-LAgS9nXsmvjTuCc/LHPWnIsPOuVuZtxh1MjVZf/xJ3Yy5kXoPhqbGUptlQdQt3izjIlns9zin5K6MNBY3u5l5g==
+vuepress-plugin-smooth-scroll@^0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/vuepress-plugin-smooth-scroll/-/vuepress-plugin-smooth-scroll-0.0.3.tgz#6eff2d4c186cca917cc9f7df2b0af7de7c8c6438"
+  integrity sha512-qsQkDftLVFLe8BiviIHaLV0Ea38YLZKKonDGsNQy1IE0wllFpFIEldWD8frWZtDFdx6b/O3KDMgVQ0qp5NjJCg==
+  dependencies:
+    smoothscroll-polyfill "^0.4.3"
+
+vuepress@1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/vuepress/-/vuepress-1.2.0.tgz#2f2cdf337ad40a3e4866dfd33e97b840db386af7"
+  integrity sha512-EfHo8Cc73qo+1Pm18hM0qOGynmDr8q5fu2664obynsdCJ1zpvoShVnA0Msraw4SI2xDc0iAoIb3dTwxUIM8DAw==
   dependencies:
-    "@vuepress/core" "^1.1.0"
-    "@vuepress/theme-default" "^1.1.0"
+    "@vuepress/core" "^1.2.0"
+    "@vuepress/theme-default" "^1.2.0"
     cac "^6.3.9"
     envinfo "^7.2.0"
     opencollective-postinstall "^2.0.2"