diff --git a/package-lock.json b/package-lock.json
index 3eabfb2a..0ff2649e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "stablog",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -1874,6 +1874,7 @@
       "version": "3.2.1",
       "resolved": "https://registry.npm.taobao.org/ansi-styles/download/ansi-styles-3.2.1.tgz?cache=0&sync_timestamp=1566430679283&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fansi-styles%2Fdownload%2Fansi-styles-3.2.1.tgz",
       "integrity": "sha1-QfuyAkPlCxK+DwS43tvwdSDOhB0=",
+      "dev": true,
       "requires": {
         "color-convert": "^1.9.0"
       }
@@ -2109,7 +2110,7 @@
     },
     "array-each": {
       "version": "1.0.1",
-      "resolved": "https://registry.npm.taobao.org/array-each/download/array-each-1.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/array-each/-/array-each-1.0.1.tgz",
       "integrity": "sha1-p5SvDAWrF1KEbudTofIRoFugxE8="
     },
     "array-find-index": {
@@ -2126,8 +2127,8 @@
     },
     "array-slice": {
       "version": "1.1.0",
-      "resolved": "https://registry.npm.taobao.org/array-slice/download/array-slice-1.1.0.tgz",
-      "integrity": "sha1-42jqFfibxwaff/uJrsOmx9SsItQ="
+      "resolved": "https://registry.npmjs.org/array-slice/-/array-slice-1.1.0.tgz",
+      "integrity": "sha512-B1qMD3RBP7O8o0H2KbrXDyB0IccejMF15+87Lvlor12ONPRHP6gTjXMNkt/d3ZuOGbAe66hFmaCfECI24Ufp6w=="
     },
     "array-union": {
       "version": "1.0.2",
@@ -3338,6 +3339,7 @@
       "version": "1.9.3",
       "resolved": "https://registry.npm.taobao.org/color-convert/download/color-convert-1.9.3.tgz",
       "integrity": "sha1-u3GFBpDh8TZWfeYp0tVHHe2kweg=",
+      "dev": true,
       "requires": {
         "color-name": "1.1.3"
       }
@@ -3345,7 +3347,8 @@
     "color-name": {
       "version": "1.1.3",
       "resolved": "https://registry.npm.taobao.org/color-name/download/color-name-1.1.3.tgz",
-      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU="
+      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
+      "dev": true
     },
     "color-string": {
       "version": "1.5.3",
@@ -3357,6 +3360,11 @@
         "simple-swizzle": "^0.2.2"
       }
     },
+    "colorette": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.1.0.tgz",
+      "integrity": "sha512-6S062WDQUXi6hOfkO/sBPVwE5ASXY4G2+b4atvhJfSsuUUhIaUKlkjLe9692Ipyt5/a+IPF5aVTu3V5gvXq5cg=="
+    },
     "colors": {
       "version": "1.0.3",
       "resolved": "https://registry.npm.taobao.org/colors/download/colors-1.0.3.tgz",
@@ -4837,7 +4845,8 @@
     "escape-string-regexp": {
       "version": "1.0.5",
       "resolved": "https://registry.npm.taobao.org/escape-string-regexp/download/escape-string-regexp-1.0.5.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fescape-string-regexp%2Fdownload%2Fescape-string-regexp-1.0.5.tgz",
-      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ="
+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
+      "dev": true
     },
     "escodegen": {
       "version": "1.9.1",
@@ -5301,20 +5310,30 @@
       }
     },
     "findup-sync": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npm.taobao.org/findup-sync/download/findup-sync-2.0.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Ffindup-sync%2Fdownload%2Ffindup-sync-2.0.0.tgz",
-      "integrity": "sha1-kyaxSIwi0aYIhlCoaQGy2akKLLw=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/findup-sync/-/findup-sync-3.0.0.tgz",
+      "integrity": "sha512-YbffarhcicEhOrm4CtrwdKBdCuz576RLdhJDsIfvNtxUuhdRet1qZcsMjqbePtAseKdAnDyM/IyXbu7PRPRLYg==",
       "requires": {
         "detect-file": "^1.0.0",
-        "is-glob": "^3.1.0",
+        "is-glob": "^4.0.0",
         "micromatch": "^3.0.4",
         "resolve-dir": "^1.0.1"
+      },
+      "dependencies": {
+        "is-glob": {
+          "version": "4.0.1",
+          "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.1.tgz",
+          "integrity": "sha512-5G0tKtBTFImOqDnLB2hG6Bp2qcKEFduo4tZu9MT/H6NQv/ghhy30o55ufafxJ/LdH79LLs2Kfrn85TLKyA7BUg==",
+          "requires": {
+            "is-extglob": "^2.1.1"
+          }
+        }
       }
     },
     "fined": {
       "version": "1.2.0",
-      "resolved": "https://registry.npm.taobao.org/fined/download/fined-1.2.0.tgz",
-      "integrity": "sha1-0AvszxqitHXRbUI7Aji3E6LEo3s=",
+      "resolved": "https://registry.npmjs.org/fined/-/fined-1.2.0.tgz",
+      "integrity": "sha512-ZYDqPLGxDkDhDZBjZBb+oD1+j0rA4E0pXY50eplAAOPg2N/gUBSSk5IM1/QhPfyVo19lJ+CvXpqfvk+b2p/8Ng==",
       "requires": {
         "expand-tilde": "^2.0.2",
         "is-plain-object": "^2.0.3",
@@ -5325,8 +5344,8 @@
     },
     "flagged-respawn": {
       "version": "1.0.1",
-      "resolved": "https://registry.npm.taobao.org/flagged-respawn/download/flagged-respawn-1.0.1.tgz",
-      "integrity": "sha1-595vEnnd2cqarIpZcdYYYGs6q0E="
+      "resolved": "https://registry.npmjs.org/flagged-respawn/-/flagged-respawn-1.0.1.tgz",
+      "integrity": "sha512-lNaHNVymajmk0OJMBn8fVUAU1BtDeKIqKoVhk4xAALB57aALg6b4W0MfJ/cUE0g9YBXy5XhSlPIpYIJ7HaY/3Q=="
     },
     "flush-write-stream": {
       "version": "1.1.1",
@@ -6216,6 +6235,11 @@
       "resolved": "https://registry.npm.taobao.org/get-value/download/get-value-2.0.6.tgz",
       "integrity": "sha1-3BXKHGcjh8p2vTesCjlbogQqLCg="
     },
+    "getopts": {
+      "version": "2.2.5",
+      "resolved": "https://registry.npmjs.org/getopts/-/getopts-2.2.5.tgz",
+      "integrity": "sha512-9jb7AW5p3in+IiJWhQiZmmwkpLaR/ccTWdWQCtZM66HJcHHLegowh4q4tSD7gouUyeNvFWRavfK9GXosQHDpFA=="
+    },
     "getpass": {
       "version": "0.1.7",
       "resolved": "https://registry.npm.taobao.org/getpass/download/getpass-0.1.7.tgz",
@@ -6399,7 +6423,8 @@
     "has-flag": {
       "version": "3.0.0",
       "resolved": "https://registry.npm.taobao.org/has-flag/download/has-flag-3.0.0.tgz",
-      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
+      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
+      "dev": true
     },
     "has-symbols": {
       "version": "1.0.0",
@@ -6912,8 +6937,8 @@
     },
     "is-absolute": {
       "version": "1.0.0",
-      "resolved": "https://registry.npm.taobao.org/is-absolute/download/is-absolute-1.0.0.tgz",
-      "integrity": "sha1-OV4a6EsR8mrReV5zwXN45IowFXY=",
+      "resolved": "https://registry.npmjs.org/is-absolute/-/is-absolute-1.0.0.tgz",
+      "integrity": "sha512-dOWoqflvcydARa360Gvv18DZ/gRuHKi2NU/wU5X1ZFzdYfH29nkiNZsF3mp4OJ3H4yo9Mx8A/uAGNzpzPN3yBA==",
       "requires": {
         "is-relative": "^1.0.0",
         "is-windows": "^1.0.1"
@@ -7072,6 +7097,7 @@
       "version": "3.1.0",
       "resolved": "https://registry.npm.taobao.org/is-glob/download/is-glob-3.1.0.tgz",
       "integrity": "sha1-e6WuJCF4BKxwcHuWkiVnSGzD6Eo=",
+      "dev": true,
       "requires": {
         "is-extglob": "^2.1.0"
       }
@@ -7141,8 +7167,8 @@
     },
     "is-relative": {
       "version": "1.0.0",
-      "resolved": "https://registry.npm.taobao.org/is-relative/download/is-relative-1.0.0.tgz",
-      "integrity": "sha1-obtpNc6MXboei5dUubLcwCDiJg0=",
+      "resolved": "https://registry.npmjs.org/is-relative/-/is-relative-1.0.0.tgz",
+      "integrity": "sha512-Kw/ReK0iqwKeu0MITLFuj0jbPAmEiOsIwyIXvvbfa6QfmN9pkD1M+8pdk7Rl/dTKbH34/XBFMbgD4iMJhLQbGA==",
       "requires": {
         "is-unc-path": "^1.0.0"
       }
@@ -7190,8 +7216,8 @@
     },
     "is-unc-path": {
       "version": "1.0.0",
-      "resolved": "https://registry.npm.taobao.org/is-unc-path/download/is-unc-path-1.0.0.tgz",
-      "integrity": "sha1-1zHoiY7QkKEsNSrS6u1Qla0yLJ0=",
+      "resolved": "https://registry.npmjs.org/is-unc-path/-/is-unc-path-1.0.0.tgz",
+      "integrity": "sha512-mrGpVd0fs7WWLfVsStvgF6iEJnbjDFZh9/emhRDcGWTduTfNHd9CHeUwH3gYIjdbwo4On6hunkztwOaAw0yllQ==",
       "requires": {
         "unc-path-regex": "^0.1.2"
       }
@@ -7362,50 +7388,31 @@
       "integrity": "sha1-twT0lE2V4lXQOPDLBfuKYCxVowA="
     },
     "knex": {
-      "version": "0.15.2",
-      "resolved": "https://registry.npm.taobao.org/knex/download/knex-0.15.2.tgz",
-      "integrity": "sha1-YFm4dIlgX0zIdZmm0qnSZXCek0A=",
-      "requires": {
-        "babel-runtime": "^6.26.0",
-        "bluebird": "^3.5.1",
-        "chalk": "2.3.2",
-        "commander": "^2.16.0",
-        "debug": "3.1.0",
-        "inherits": "~2.0.3",
-        "interpret": "^1.1.0",
-        "liftoff": "2.5.0",
-        "lodash": "^4.17.10",
-        "minimist": "1.2.0",
+      "version": "0.19.5",
+      "resolved": "https://registry.npmjs.org/knex/-/knex-0.19.5.tgz",
+      "integrity": "sha512-Hy258avCVircQq+oj3WBqPzl8jDIte438Qlq+8pt1i/TyLYVA4zPh2uKc7Bx0t+qOpa6D42HJ2jjtl2vagzilw==",
+      "requires": {
+        "bluebird": "^3.7.0",
+        "colorette": "1.1.0",
+        "commander": "^3.0.2",
+        "debug": "4.1.1",
+        "getopts": "2.2.5",
+        "inherits": "~2.0.4",
+        "interpret": "^1.2.0",
+        "liftoff": "3.1.0",
+        "lodash": "^4.17.15",
         "mkdirp": "^0.5.1",
-        "pg-connection-string": "2.0.0",
-        "tarn": "^1.1.4",
-        "tildify": "1.2.0",
-        "uuid": "^3.3.2",
-        "v8flags": "^3.1.1"
+        "pg-connection-string": "2.1.0",
+        "tarn": "^2.0.0",
+        "tildify": "2.0.0",
+        "uuid": "^3.3.3",
+        "v8flags": "^3.1.3"
       },
       "dependencies": {
-        "chalk": {
-          "version": "2.3.2",
-          "resolved": "https://registry.npm.taobao.org/chalk/download/chalk-2.3.2.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fchalk%2Fdownload%2Fchalk-2.3.2.tgz",
-          "integrity": "sha1-JQ3JawdJG/1gHmSNZt319gx6XGU=",
-          "requires": {
-            "ansi-styles": "^3.2.1",
-            "escape-string-regexp": "^1.0.5",
-            "supports-color": "^5.3.0"
-          }
-        },
-        "debug": {
-          "version": "3.1.0",
-          "resolved": "https://registry.npm.taobao.org/debug/download/debug-3.1.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fdebug%2Fdownload%2Fdebug-3.1.0.tgz",
-          "integrity": "sha1-W7WgZyYotkFJVmuhaBnmFRjGcmE=",
-          "requires": {
-            "ms": "2.0.0"
-          }
-        },
-        "ms": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npm.taobao.org/ms/download/ms-2.0.0.tgz",
-          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+        "commander": {
+          "version": "3.0.2",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-3.0.2.tgz",
+          "integrity": "sha512-Gar0ASD4BDyKC4hl4DwHqDrmvjoxWKZigVnAbn5H1owvm4CxCPdb0HQDehwNYMJpla5+M2tPmPARzhtYuwpHow=="
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@@ -7561,12 +7568,12 @@
       }
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     "liftoff": {
-      "version": "2.5.0",
-      "resolved": "https://registry.npm.taobao.org/liftoff/download/liftoff-2.5.0.tgz",
-      "integrity": "sha1-IAkpG7Mc6oYbvxCnwVooyvdcMew=",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/liftoff/-/liftoff-3.1.0.tgz",
+      "integrity": "sha512-DlIPlJUkCV0Ips2zf2pJP0unEoT1kwYhiiPUGF3s/jtxTCjziNLoiVVh+jqWOWeFi6mmwQ5fNxvAUyPad4Dfog==",
       "requires": {
         "extend": "^3.0.0",
-        "findup-sync": "^2.0.0",
+        "findup-sync": "^3.0.0",
         "fined": "^1.0.1",
         "flagged-respawn": "^1.0.0",
         "is-plain-object": "^2.0.4",
@@ -7817,16 +7824,16 @@
     },
     "make-iterator": {
       "version": "1.0.1",
-      "resolved": "https://registry.npm.taobao.org/make-iterator/download/make-iterator-1.0.1.tgz",
-      "integrity": "sha1-KbM/MSqo9UfEpeSQ9Wr87JkTOtY=",
+      "resolved": "https://registry.npmjs.org/make-iterator/-/make-iterator-1.0.1.tgz",
+      "integrity": "sha512-pxiuXh0iVEq7VM7KMIhs5gxsfxCux2URptUQaXo4iZZJxBAzTPOLE2BumO5dbfVYq/hBJFBR/a1mFDmOx5AGmw==",
       "requires": {
         "kind-of": "^6.0.2"
       },
       "dependencies": {
         "kind-of": {
           "version": "6.0.2",
-          "resolved": "https://registry.npm.taobao.org/kind-of/download/kind-of-6.0.2.tgz",
-          "integrity": "sha1-ARRrNqYhjmTljzqNZt5df8b20FE="
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
+          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA=="
         }
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@@ -8888,7 +8895,7 @@
     },
     "object.defaults": {
       "version": "1.1.0",
-      "resolved": "https://registry.npm.taobao.org/object.defaults/download/object.defaults-1.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/object.defaults/-/object.defaults-1.1.0.tgz",
       "integrity": "sha1-On+GgzS0B96gbaFtiNXNKeQ1/s8=",
       "requires": {
         "array-each": "^1.0.1",
@@ -8909,7 +8916,7 @@
     },
     "object.map": {
       "version": "1.0.1",
-      "resolved": "https://registry.npm.taobao.org/object.map/download/object.map-1.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/object.map/-/object.map-1.0.1.tgz",
       "integrity": "sha1-z4Plncj8wK1fQlDh94s7gb2AHTc=",
       "requires": {
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@@ -9234,7 +9241,7 @@
     },
     "parse-filepath": {
       "version": "1.0.2",
-      "resolved": "https://registry.npm.taobao.org/parse-filepath/download/parse-filepath-1.0.2.tgz",
+      "resolved": "https://registry.npmjs.org/parse-filepath/-/parse-filepath-1.0.2.tgz",
       "integrity": "sha1-pjISf1Oq89FYdvWHLz/6x2PWyJE=",
       "requires": {
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@@ -9308,7 +9315,7 @@
     },
     "path-root": {
       "version": "0.1.1",
-      "resolved": "https://registry.npm.taobao.org/path-root/download/path-root-0.1.1.tgz",
+      "resolved": "https://registry.npmjs.org/path-root/-/path-root-0.1.1.tgz",
       "integrity": "sha1-mkpoFMrBwM1zNgqV8yCDyOpHRbc=",
       "requires": {
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@@ -9316,7 +9323,7 @@
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     "path-root-regex": {
       "version": "0.1.2",
-      "resolved": "https://registry.npm.taobao.org/path-root-regex/download/path-root-regex-0.1.2.tgz",
+      "resolved": "https://registry.npmjs.org/path-root-regex/-/path-root-regex-0.1.2.tgz",
       "integrity": "sha1-v8zcjfWxLcUsi0PsONGNcsBLqW0="
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@@ -9377,9 +9384,9 @@
       "integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns="
     },
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-      "version": "2.0.0",
-      "resolved": "https://registry.npm.taobao.org/pg-connection-string/download/pg-connection-string-2.0.0.tgz",
-      "integrity": "sha1-Pu/lmX4G2Ugh5NUC5CtqHHP434I="
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/pg-connection-string/-/pg-connection-string-2.1.0.tgz",
+      "integrity": "sha512-bhlV7Eq09JrRIvo1eKngpwuqKtJnNhZdpdOlvrPrA4dxqXPjxSrbNrfnIDmTpwMyRszrcV4kU5ZA4mMsQUrjdg=="
     },
     "pify": {
       "version": "4.0.1",
@@ -12382,6 +12389,7 @@
       "version": "5.5.0",
       "resolved": "https://registry.npm.taobao.org/supports-color/download/supports-color-5.5.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fsupports-color%2Fdownload%2Fsupports-color-5.5.0.tgz",
       "integrity": "sha1-4uaaRKyHcveKHsCzW2id9lMO/I8=",
+      "dev": true,
       "requires": {
         "has-flag": "^3.0.0"
       }
@@ -12470,9 +12478,9 @@
       }
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     "tarn": {
-      "version": "1.1.5",
-      "resolved": "https://registry.npm.taobao.org/tarn/download/tarn-1.1.5.tgz",
-      "integrity": "sha1-e+iGIulRc4ufo/t3R3MJJCzd3C0="
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/tarn/-/tarn-2.0.0.tgz",
+      "integrity": "sha512-7rNMCZd3s9bhQh47ksAQd92ADFcJUjjbyOvyFjNLwTPpGieFHMC84S+LOzw0fx1uh6hnDz/19r8CPMnIjJlMMA=="
     },
     "temp-file": {
       "version": "3.3.4",
@@ -12686,12 +12694,9 @@
       }
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     "tildify": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npm.taobao.org/tildify/download/tildify-1.2.0.tgz",
-      "integrity": "sha1-3OwD9V3Km3qj5bBPIYF+tW5jWIo=",
-      "requires": {
-        "os-homedir": "^1.0.0"
-      }
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/tildify/-/tildify-2.0.0.tgz",
+      "integrity": "sha512-Cc+OraorugtXNfs50hU9KS369rFXCfgGLpfCfvlc+Ud5u6VWmUQsOAa9HbTvheQdYnrdJqqv1e5oIqXppMYnSw=="
     },
     "time-stamp": {
       "version": "1.1.0",
@@ -13063,7 +13068,7 @@
     },
     "unc-path-regex": {
       "version": "0.1.2",
-      "resolved": "https://registry.npm.taobao.org/unc-path-regex/download/unc-path-regex-0.1.2.tgz",
+      "resolved": "https://registry.npmjs.org/unc-path-regex/-/unc-path-regex-0.1.2.tgz",
       "integrity": "sha1-5z3T17DXxe2G+6xrCufYxqadUPo="
     },
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@@ -13422,8 +13427,8 @@
     },
     "v8flags": {
       "version": "3.1.3",
-      "resolved": "https://registry.npm.taobao.org/v8flags/download/v8flags-3.1.3.tgz",
-      "integrity": "sha1-/J3CNSHKIMVDP4HMTrmzAzuxBdg=",
+      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.1.3.tgz",
+      "integrity": "sha512-amh9CCg3ZxkzQ48Mhcb8iX7xpAfYJgePHxWMQCBWECpOSqJUXgY26ncA61UTV0BkPqfhcy6mzwCIoP4ygxpW8w==",
       "requires": {
         "homedir-polyfill": "^1.0.1"
       }
diff --git a/package.json b/package.json
index b0caa1b1..a939864d 100644
--- a/package.json
+++ b/package.json
@@ -72,7 +72,7 @@
     "element-ui": "^2.12.0",
     "image-size": "^0.8.3",
     "json5": "^2.1.0",
-    "knex": "^0.15.2",
+    "knex": "^0.19.5",
     "lodash": "^4.17.5",
     "md5": "^2.2.1",
     "moment": "^2.24.0",