diff --git a/gulp/compilejs.js b/gulp/compilejs.js
index a9a1e15..8da7600 100644
--- a/gulp/compilejs.js
+++ b/gulp/compilejs.js
@@ -1,7 +1,7 @@
 var browserify = require('browserify');
 var buffer = require('vinyl-buffer');
 var gulp = require('gulp');
-var gutil = require('gulp-util');
+var logger = require('fancy-log');
 var source = require('vinyl-source-stream');
 var uglify = require('gulp-uglify');
 var watchify = require('watchify');
@@ -41,9 +41,9 @@ function watchjs(sources, outdir, outfile, opt_options) {
   }));
 
   bundler.on('update', function() {
-    gutil.log('recompiling js...');
+    logger.info('recompiling js...');
     rebundle_(bundler, outdir, outfile, opt_options);
-    gutil.log('finished recompiling js');
+    logger.info('finished recompiling js');
   });
   return rebundle_(bundler, outdir, outfile, opt_options);
 }
@@ -52,7 +52,7 @@ function watchjs(sources, outdir, outfile, opt_options) {
 function rebundle_(bundler, outdir, outfile, opt_options) {
   var options = opt_options || {};
   return bundler.bundle()
-    .on('error', gutil.log.bind(gutil, 'browserify error'))
+    .on('error', logger.info.bind(logger, 'browserify error'))
     .pipe(source(outfile))
     .pipe(buffer())
     .pipe(uglify(options.uglify))
diff --git a/package-lock.json b/package-lock.json
index 69dee4e..6519535 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -54,11 +54,6 @@
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
       "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
     },
-    "ansi-styles": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
-      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4="
-    },
     "ansi-wrap": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/ansi-wrap/-/ansi-wrap-0.1.0.tgz",
@@ -117,21 +112,11 @@
       "resolved": "https://registry.npmjs.org/arr-union/-/arr-union-3.1.0.tgz",
       "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ="
     },
-    "array-differ": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/array-differ/-/array-differ-1.0.0.tgz",
-      "integrity": "sha1-7/UuN1gknTO+QCuLuOVkuytdQDE="
-    },
     "array-each": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/array-each/-/array-each-1.0.1.tgz",
       "integrity": "sha1-p5SvDAWrF1KEbudTofIRoFugxE8="
     },
-    "array-find-index": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/array-find-index/-/array-find-index-1.0.2.tgz",
-      "integrity": "sha1-3wEKoSh+Fku9pvlyOwqWoexBh6E="
-    },
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       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/array-initial/-/array-initial-1.1.0.tgz",
@@ -171,11 +156,6 @@
         }
       }
     },
-    "array-uniq": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.3.tgz",
-      "integrity": "sha1-r2rId6Jcx/dOBYiUdThY39sk/bY="
-    },
     "array-unique": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.3.2.tgz",
@@ -351,11 +331,6 @@
       "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.1.tgz",
       "integrity": "sha512-mLQ4i2QO1ytvGWFWmcngKO//JXAQueZvwEKtjgQFM4jIK0kU+ytMfplL8j+n5mspOfjHwoAg+9yhb7BwAHm36g=="
     },
-    "beeper": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/beeper/-/beeper-1.1.1.tgz",
-      "integrity": "sha1-5tXqjF2tABMEpwsiY4RH9pyy+Ak="
-    },
     "binary-extensions": {
       "version": "1.12.0",
       "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.12.0.tgz",
@@ -796,22 +771,6 @@
       "resolved": "https://registry.npmjs.org/cached-path-relative/-/cached-path-relative-1.0.2.tgz",
       "integrity": "sha512-5r2GqsoEb4qMTTN9J+WzXfjov+hjxT+j3u5K+kIVNIwAd99DLCJE9pBIMP1qVeybV6JiijL385Oz0DcYxfbOIg=="
     },
-    "camelcase-keys": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/camelcase-keys/-/camelcase-keys-2.1.0.tgz",
-      "integrity": "sha1-MIvur/3ygRkFHvodkyITyRuPkuc=",
-      "requires": {
-        "camelcase": "^2.0.0",
-        "map-obj": "^1.0.0"
-      },
-      "dependencies": {
-        "camelcase": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-2.1.1.tgz",
-          "integrity": "sha1-fB0W1nmhu+WcoCys7PsBHiAfWh8="
-        }
-      }
-    },
     "chai": {
       "version": "3.5.0",
       "resolved": "https://registry.npmjs.org/chai/-/chai-3.5.0.tgz",
@@ -832,18 +791,6 @@
         "bit-mask": "0.0.2-alpha"
       }
     },
-    "chalk": {
-      "version": "1.1.3",
-      "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
-      "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
-      "requires": {
-        "ansi-styles": "^2.2.1",
-        "escape-string-regexp": "^1.0.2",
-        "has-ansi": "^2.0.0",
-        "strip-ansi": "^3.0.0",
-        "supports-color": "^2.0.0"
-      }
-    },
     "chokidar": {
       "version": "2.1.8",
       "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-2.1.8.tgz",
@@ -905,21 +852,11 @@
         }
       }
     },
-    "clone": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/clone/-/clone-1.0.4.tgz",
-      "integrity": "sha1-2jCcwmPfFZlMaIypAheco8fNfH4="
-    },
     "clone-buffer": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/clone-buffer/-/clone-buffer-1.0.0.tgz",
       "integrity": "sha1-4+JbIHrE5wGvch4staFnksrD3Fg="
     },
-    "clone-stats": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/clone-stats/-/clone-stats-0.0.1.tgz",
-      "integrity": "sha1-uI+UqCzzi4eR1YBG6kAprYjKmdE="
-    },
     "cloneable-readable": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/cloneable-readable/-/cloneable-readable-1.1.3.tgz",
@@ -1076,14 +1013,6 @@
         "randomfill": "^1.0.3"
       }
     },
-    "currently-unhandled": {
-      "version": "0.4.1",
-      "resolved": "https://registry.npmjs.org/currently-unhandled/-/currently-unhandled-0.4.1.tgz",
-      "integrity": "sha1-mI3zP+qxke95mmE2nddsF635V+o=",
-      "requires": {
-        "array-find-index": "^1.0.1"
-      }
-    },
     "d": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/d/-/d-1.0.1.tgz",
@@ -1386,11 +1315,6 @@
         "es6-symbol": "^3.1.1"
       }
     },
-    "escape-string-regexp": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
-      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ="
-    },
     "evp_bytestokey": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/evp_bytestokey/-/evp_bytestokey-1.0.3.tgz",
@@ -1876,11 +1800,6 @@
       "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-1.0.3.tgz",
       "integrity": "sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w=="
     },
-    "get-stdin": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-4.0.1.tgz",
-      "integrity": "sha1-uWjGsKBDhDJJAui/Gl3zJXmkUP4="
-    },
     "get-value": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/get-value/-/get-value-2.0.6.tgz",
@@ -2224,52 +2143,6 @@
         }
       }
     },
-    "gulp-util": {
-      "version": "3.0.7",
-      "resolved": "https://registry.npmjs.org/gulp-util/-/gulp-util-3.0.7.tgz",
-      "integrity": "sha1-eJJcS4+LSQBawBoBHFV+YhiUHLs=",
-      "requires": {
-        "array-differ": "^1.0.0",
-        "array-uniq": "^1.0.2",
-        "beeper": "^1.0.0",
-        "chalk": "^1.0.0",
-        "dateformat": "^1.0.11",
-        "fancy-log": "^1.1.0",
-        "gulplog": "^1.0.0",
-        "has-gulplog": "^0.1.0",
-        "lodash._reescape": "^3.0.0",
-        "lodash._reevaluate": "^3.0.0",
-        "lodash._reinterpolate": "^3.0.0",
-        "lodash.template": "^3.0.0",
-        "minimist": "^1.1.0",
-        "multipipe": "^0.1.2",
-        "object-assign": "^3.0.0",
-        "replace-ext": "0.0.1",
-        "through2": "^2.0.0",
-        "vinyl": "^0.5.0"
-      },
-      "dependencies": {
-        "dateformat": {
-          "version": "1.0.12",
-          "resolved": "https://registry.npmjs.org/dateformat/-/dateformat-1.0.12.tgz",
-          "integrity": "sha1-nxJLZ1lMk3/3BpMuSmQsyo27/uk=",
-          "requires": {
-            "get-stdin": "^4.0.1",
-            "meow": "^3.3.0"
-          }
-        },
-        "minimist": {
-          "version": "1.2.5",
-          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
-          "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw=="
-        },
-        "object-assign": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-3.0.0.tgz",
-          "integrity": "sha1-m+3VygiXlJvKR+f/QIBi1Un1h/I="
-        }
-      }
-    },
     "gulplog": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/gulplog/-/gulplog-1.0.0.tgz",
@@ -2286,14 +2159,6 @@
         "function-bind": "^1.1.1"
       }
     },
-    "has-ansi": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/has-ansi/-/has-ansi-2.0.0.tgz",
-      "integrity": "sha1-NPUEnOHs3ysGSa8+8k5F7TVBbZE=",
-      "requires": {
-        "ansi-regex": "^2.0.0"
-      }
-    },
     "has-gulplog": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/has-gulplog/-/has-gulplog-0.1.0.tgz",
@@ -2412,14 +2277,6 @@
       "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.1.13.tgz",
       "integrity": "sha512-4vf7I2LYV/HaWerSo3XmlMkp5eZ83i+/CDluXi/IGTs/O1sejBNhTtnxzmRZfvOUqj7lZjqHkeTvpgSFDlWZTg=="
     },
-    "indent-string": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/indent-string/-/indent-string-2.1.0.tgz",
-      "integrity": "sha1-ji1INIdCEhtKghi3oTfppSBJ3IA=",
-      "requires": {
-        "repeating": "^2.0.0"
-      }
-    },
     "inflight": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
@@ -2562,14 +2419,6 @@
       "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
       "integrity": "sha1-qIwCU1eR8C7TfHahueqXc8gz+MI="
     },
-    "is-finite": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/is-finite/-/is-finite-1.0.2.tgz",
-      "integrity": "sha1-zGZ3aVYCvlUO8R6LSqYwU0K20Ko=",
-      "requires": {
-        "number-is-nan": "^1.0.0"
-      }
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     "is-fullwidth-code-point": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
@@ -2773,123 +2622,11 @@
         }
       }
     },
-    "lodash._basecopy": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/lodash._basecopy/-/lodash._basecopy-3.0.1.tgz",
-      "integrity": "sha1-jaDmqHbPNEwK2KVIghEd08XHyjY="
-    },
-    "lodash._basetostring": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/lodash._basetostring/-/lodash._basetostring-3.0.1.tgz",
-      "integrity": "sha1-0YYdh3+CSlL2aYMtyvPuFVZqB9U="
-    },
-    "lodash._basevalues": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/lodash._basevalues/-/lodash._basevalues-3.0.0.tgz",
-      "integrity": "sha1-W3dXYoAr3j0yl1A+JjAIIP32Ybc="
-    },
-    "lodash._getnative": {
-      "version": "3.9.1",
-      "resolved": "https://registry.npmjs.org/lodash._getnative/-/lodash._getnative-3.9.1.tgz",
-      "integrity": "sha1-VwvH3t5G1hzc3mh9ZdPuy6o6r/U="
-    },
-    "lodash._isiterateecall": {
-      "version": "3.0.9",
-      "resolved": "https://registry.npmjs.org/lodash._isiterateecall/-/lodash._isiterateecall-3.0.9.tgz",
-      "integrity": "sha1-UgOte6Ql+uhCRg5pbbnPPmqsBXw="
-    },
-    "lodash._reescape": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/lodash._reescape/-/lodash._reescape-3.0.0.tgz",
-      "integrity": "sha1-Kx1vXf4HyKNVdT5fJ/rH8c3hYWo="
-    },
-    "lodash._reevaluate": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/lodash._reevaluate/-/lodash._reevaluate-3.0.0.tgz",
-      "integrity": "sha1-WLx0xAZklTrgsSTYBpltrKQx4u0="
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-    "lodash._reinterpolate": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/lodash._reinterpolate/-/lodash._reinterpolate-3.0.0.tgz",
-      "integrity": "sha1-DM8tiRZq8Ds2Y8eWU4t1rG4RTZ0="
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-    "lodash._root": {
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-      "resolved": "https://registry.npmjs.org/lodash._root/-/lodash._root-3.0.1.tgz",
-      "integrity": "sha1-+6HEUkwZ7ppfgTa0YJ8BfPTe1pI="
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-      "integrity": "sha1-mV7g3BjBtIzJLv+ucaEKq1tIdpg=",
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-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/lodash.isarray/-/lodash.isarray-3.0.4.tgz",
-      "integrity": "sha1-eeTriMNqgSKvhvhEqpvNhRtfu1U="
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-    "lodash.keys": {
-      "version": "3.1.2",
-      "resolved": "https://registry.npmjs.org/lodash.keys/-/lodash.keys-3.1.2.tgz",
-      "integrity": "sha1-TbwEcrFWvlCgsoaFXRvQsMZWCYo=",
-      "requires": {
-        "lodash._getnative": "^3.0.0",
-        "lodash.isarguments": "^3.0.0",
-        "lodash.isarray": "^3.0.0"
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       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-3.0.4.tgz",
       "integrity": "sha1-LcvSwofLwKVcxCMovQxzYVDVPj8="
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-    "lodash.restparam": {
-      "version": "3.6.1",
-      "resolved": "https://registry.npmjs.org/lodash.restparam/-/lodash.restparam-3.6.1.tgz",
-      "integrity": "sha1-k2pOMJ7zMKdkXtQUWYbIWuWyCAU="
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-      "version": "3.6.2",
-      "resolved": "https://registry.npmjs.org/lodash.template/-/lodash.template-3.6.2.tgz",
-      "integrity": "sha1-+M3sxhaaJVvpCYrosMU9N4kx0U8=",
-      "requires": {
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-        "lodash._basevalues": "^3.0.0",
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-        "lodash.keys": "^3.0.0",
-        "lodash.restparam": "^3.0.0",
-        "lodash.templatesettings": "^3.0.0"
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-    "lodash.templatesettings": {
-      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/lodash.templatesettings/-/lodash.templatesettings-3.1.1.tgz",
-      "integrity": "sha1-+zB4RHU7Zrnxr6VOJix0UwfbqOU=",
-      "requires": {
-        "lodash._reinterpolate": "^3.0.0",
-        "lodash.escape": "^3.0.0"
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-    "loud-rejection": {
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-      "resolved": "https://registry.npmjs.org/loud-rejection/-/loud-rejection-1.6.0.tgz",
-      "integrity": "sha1-W0b4AUft7leIcPCG0Eghz5mOVR8=",
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@@ -2923,11 +2660,6 @@
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-      "resolved": "https://registry.npmjs.org/map-obj/-/map-obj-1.0.1.tgz",
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@@ -2957,30 +2689,6 @@
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-      "resolved": "https://registry.npmjs.org/meow/-/meow-3.7.0.tgz",
-      "integrity": "sha1-cstmi0JSKCkKu/qFaJJYcwioAfs=",
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-        "loud-rejection": "^1.0.0",
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-        "normalize-package-data": "^2.3.4",
-        "object-assign": "^4.0.1",
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     "micromatch": {
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       "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-3.1.10.tgz",
@@ -3077,45 +2785,6 @@
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       "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
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-    "multipipe": {
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diff --git a/package.json b/package.json
index d1db547..23d938d 100644
--- a/package.json
+++ b/package.json
@@ -14,8 +14,8 @@
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