diff --git a/package.json b/package.json
index fc9b7ac..8a02089 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
 		"gulp-clean-css": "^4.2.0",
 		"gulp-postcss": "^8.0.0",
 		"gulp-rename": "^2.0.0",
-		"gulp-sourcemaps": "^2.6.5",
+		"gulp-sourcemaps": "^3.0.0",
 		"gulp-stylelint": "^13.0.0",
 		"lodash.range": "^3.2.0",
 		"merge-stream": "^2.0.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 73106bc..9f461f7 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -19,7 +19,7 @@ devDependencies:
   gulp-clean-css: 4.2.0
   gulp-postcss: 8.0.0
   gulp-rename: 2.0.0
-  gulp-sourcemaps: 2.6.5
+  gulp-sourcemaps: 3.0.0
   gulp-stylelint: 13.0.0_stylelint@13.0.0
   lodash.range: 3.2.0
   merge-stream: 2.0.0
@@ -174,18 +174,18 @@ packages:
     dev: true
     resolution:
       integrity: sha512-Te7yn3MaqsEylBgqn47r+JeltUHzYRdzYDgFBepyAZeVnsnr5QXrQ54NRB8uz7y58Q4raeFPZlR2fmb0WUfX6Q==
-  /@gulp-sourcemaps/identity-map/1.0.2:
+  /@gulp-sourcemaps/identity-map/2.0.1:
     dependencies:
-      acorn: 5.7.3
-      css: 2.2.4
-      normalize-path: 2.1.1
+      acorn: 6.4.2
+      normalize-path: 3.0.0
+      postcss: 7.0.26
       source-map: 0.6.1
-      through2: 2.0.5
+      through2: 3.0.1
     dev: true
     engines:
       node: '>= 0.10'
     resolution:
-      integrity: sha512-ciiioYMLdo16ShmfHBXJBOFm3xPC4AuwO4xeRpFeHz7WK9PYsWCmigagG2XyzZpubK4a3qNKoUBDhbzHfa50LQ==
+      integrity: sha512-Tb+nSISZku+eQ4X1lAkevcQa+jknn/OVUgZ3XCxEKIsLsqYuPoJwJOPQeaOk75X3WPftb29GWY1eqE7GLsXb1Q==
   /@gulp-sourcemaps/map-sources/1.0.0:
     dependencies:
       normalize-path: 2.1.1
@@ -194,7 +194,7 @@ packages:
     engines:
       node: '>= 0.10'
     resolution:
-      integrity: sha1-iQrnxdjId/bThIYCFazp1+yUW9o=
+      integrity: sha512-o/EatdaGt8+x2qpb0vFLC/2Gug/xYPRXb6a+ET1wGYKozKN3krDWC/zZFZAtrzxJHuDL12mwdfEFKcKMNvc55A==
   /@nodelib/fs.scandir/2.1.3:
     dependencies:
       '@nodelib/fs.stat': 2.0.3
@@ -406,6 +406,11 @@ packages:
     dev: true
     resolution:
       integrity: sha512-TITCsNxRSDVmq3kPGuUdKZTPTfHeswsUGIjxSe8SB4EBKTPA0DO0y4yWI95kZ2hfqJAYxmu+gxzjOwdumB5S0g==
+  /abbrev/1.1.1:
+    dev: true
+    optional: true
+    resolution:
+      integrity: sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==
   /accepts/1.3.7:
     dependencies:
       mime-types: 2.1.25
@@ -423,13 +428,13 @@ packages:
       acorn: ^6.0.0 || ^7.0.0
     resolution:
       integrity: sha512-tMUqwBWfLFbJbizRmEcWSLw6HnFzfdJs2sOJEOwwtVPMoH/0Ay+E703oZz78VSXZiiDcZrQ5XKjPIUQixhmgVw==
-  /acorn/5.7.3:
+  /acorn/6.4.2:
     dev: true
     engines:
       node: '>=0.4.0'
     hasBin: true
     resolution:
-      integrity: sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==
+      integrity: sha512-XtGIhXwF8YM8bJhGxG5kXgjkEuNGLTkoYqVE+KMR+aspr4KGYmKYg7yUe3KghyQ9yheNwLnjmzh/7+gfDBmHCQ==
   /acorn/7.1.0:
     dev: true
     engines:
@@ -488,7 +493,7 @@ packages:
     engines:
       node: '>=0.10.0'
     resolution:
-      integrity: sha1-w7M6te42DYbg5ijwRorn7yfWVN8=
+      integrity: sha512-TIGnTpdo+E3+pCyAluZvtED5p5wCqLdezCyhPZzKPcxvFplEt4i+W7OONCKgeZFT3+y5NZZfOOS/Bdcanm1MYA==
   /ansi-regex/4.1.0:
     dev: true
     engines:
@@ -545,10 +550,23 @@ packages:
       node: '>=0.10.0'
     resolution:
       integrity: sha1-2CIM9GYIFSXv6lBhTz3mUU36WPE=
+  /aproba/1.2.0:
+    dev: true
+    optional: true
+    resolution:
+      integrity: sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw==
   /archy/1.0.0:
     dev: true
     resolution:
       integrity: sha1-+cjBN1fMHde8N5rHeyxipcKGjEA=
+  /are-we-there-yet/1.1.7:
+    dependencies:
+      delegates: 1.0.0
+      readable-stream: 2.3.6
+    dev: true
+    optional: true
+    resolution:
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   /argparse/1.0.10:
     dependencies:
       sprintf-js: 1.0.3
@@ -1109,6 +1127,11 @@ packages:
       fsevents: 1.2.9
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+  /chownr/1.1.4:
+    dev: true
+    optional: true
+    resolution:
+      integrity: sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg==
   /class-utils/0.3.6:
     dependencies:
       arr-union: 3.1.0
@@ -1240,7 +1263,7 @@ packages:
   /color-name/1.1.3:
     dev: true
     resolution:
-      integrity: sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
+      integrity: sha512-72fSenhMw2HZMTVHeCA9KCmpEIbzWiQsjN+BHcBbS9vr1mtt+vJjPdksIBNUmKAW8TFUDPJK5SUU3QhE9NEXDw==
   /color-name/1.1.4:
     dev: true
     resolution:
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       node: '>= 0.10.0'
     resolution:
       integrity: sha1-Ce/2xVr3I24TcTWnJXSFi2eG9SQ=
+  /console-control-strings/1.1.0:
+    dev: true
+    optional: true
+    resolution:
+      integrity: sha512-ty/fTekppD2fIwRvnZAVdeOiGd1c7YXEixbgJTNzqcxJWKQnjJ/V1bNEEE6hygpM3WjwHFUVK6HTjWSzV4a8sQ==
   /convert-source-map/1.7.0:
     dependencies:
       safe-buffer: 5.1.2
@@ -1330,7 +1358,7 @@ packages:
   /core-util-is/1.0.2:
     dev: true
     resolution:
-      integrity: sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
+      integrity: sha512-3lqz5YjWTYnW6dlDa5TLaTCcShfar1e40rmcJVwCBJC6mWlFuj0eCHIElmG1g5kyuJ/GD+8Wn4FFCcz4gJPfaQ==
   /cosmiconfig/5.2.1:
     dependencies:
       import-fresh: 2.0.0
@@ -1366,15 +1394,14 @@ packages:
       node: '>=4.8'
     resolution:
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-  /css/2.2.4:
+  /css/3.0.0:
     dependencies:
       inherits: 2.0.4
       source-map: 0.6.1
-      source-map-resolve: 0.5.2
-      urix: 0.1.0
+      source-map-resolve: 0.6.0
     dev: true
     resolution:
-      integrity: sha512-oUnjmWpy0niI3x/mPL8dVEI1l7MnG3+HHyRPHf+YFSbK+svOhXpmSOcDURUh2aOCgl2grzrOPt1nHLuCVFULLw==
+      integrity: sha512-DG9pFfwOrzc+hawpmqX/dHYHJG+Bsdb0klhyi1sDneOgGOXy9wQIC8hzyVp1e4NRYDBdxcylvywPkkXCHAzTyQ==
   /cssesc/3.0.0:
     dev: true
     engines:
@@ -1412,6 +1439,7 @@ packages:
   /debug/3.2.6:
     dependencies:
       ms: 2.1.2
+    deprecated: 'Debug versions >=3.2.0 <3.2.7 || >=4 <4.3.1 have a low-severity ReDos regression when used in a Node.js environment. It is recommended you upgrade to 3.2.7 or 4.3.1. (https://github.com/visionmedia/debug/issues/797)'
     dev: true
     resolution:
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@@ -1441,7 +1469,14 @@ packages:
     engines:
       node: '>=0.10'
     resolution:
-      integrity: sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=
+      integrity: sha512-hjf+xovcEn31w/EUYdTXQh/8smFL/dzYjohQGEIgjyNavaJfBY2p5F527Bo1VPATxv0VYTUC2bOcXvqFwk78Og==
+  /deep-extend/0.6.0:
+    dev: true
+    engines:
+      node: '>=4.0.0'
+    optional: true
+    resolution:
+      integrity: sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==
   /deep-is/0.1.3:
     dev: true
     resolution:
@@ -1508,6 +1543,11 @@ packages:
       node: '>=8'
     resolution:
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+  /delegates/1.0.0:
+    dev: true
+    optional: true
+    resolution:
+      integrity: sha512-bd2L678uiWATM6m5Z1VzNCErI3jiGzt6HGY8OVICs40JQq/HALfbyNJmp0UDakEY4pMMaN0Ly5om/B1VI/+xfQ==
   /depd/1.1.2:
     dev: true
     engines:
@@ -1524,12 +1564,20 @@ packages:
       node: '>=0.10.0'
     resolution:
       integrity: sha1-8NZtA2cqglyxtzvbP+YjEMjlUrc=
+  /detect-libc/1.0.3:
+    dev: true
+    engines:
+      node: '>=0.10'
+    hasBin: true
+    optional: true
+    resolution:
+      integrity: sha512-pGjwhsmsp4kL2RTz08wcOlGN83otlqHeD/Z5T8GXZB+/YcpQ/dgo+lbU8ZsGxV0HIvqqxo9l7mqYwyYMD9bKDg==
   /detect-newline/2.1.0:
     dev: true
     engines:
       node: '>=0.10.0'
     resolution:
-      integrity: sha1-9B8cEL5LAOh7XxPaaAdZ8sW/0+I=
+      integrity: sha512-CwffZFvlJffUg9zZA0uqrjQayUTC8ob94pnr5sFwaVv3IOmkfUHcWH+jXaQK3askE51Cqe8/9Ql/0uXNwqZ8Zg==
   /dev-ip/1.0.1:
     dev: true
     engines:
@@ -1745,7 +1793,7 @@ packages:
       es6-symbol: 3.1.3
     dev: true
     resolution:
-      integrity: sha1-p96IkUGgWpSwhUQDstCg+/qY87c=
+      integrity: sha512-zw4SRzoUkd+cl+ZoE15A9o1oQd920Bb0iOJMQkQhl3jNc03YqVjAhG7scf9C5KWRU/R13Orf588uCC6525o02g==
   /es6-symbol/3.1.3:
     dependencies:
       d: 1.0.1
@@ -1771,7 +1819,7 @@ packages:
     engines:
       node: '>=0.8.0'
     resolution:
-      integrity: sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=
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   /eslint-scope/5.0.0:
     dependencies:
       esrecurse: 4.2.1
@@ -1897,7 +1945,7 @@ packages:
       es5-ext: 0.10.53
     dev: true
     resolution:
-      integrity: sha1-34xp7vFkeSPHFXuc6DhAYQsCzDk=
+      integrity: sha512-D9rRn9y7kLPnJ+hMq7S/nhvoKwwvVJahBi2BPmx3bvbsEdK3W9ii8cBSGjP+72/LnM4n6fo3+dkCX5FeTQruXA==
   /eventemitter3/1.2.0:
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     resolution:
@@ -2209,6 +2257,13 @@ packages:
     dev: true
     resolution:
       integrity: sha1-N5TzeMWLNC6n27sjCVEJxLO2IpE=
+  /fs-minipass/1.2.7:
+    dependencies:
+      minipass: 2.9.0
+    dev: true
+    optional: true
+    resolution:
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   /fs-mkdirp-stream/1.0.0:
     dependencies:
       graceful-fs: 4.2.3
@@ -2227,6 +2282,7 @@ packages:
       - node-pre-gyp
     dependencies:
       nan: 2.14.0
+      node-pre-gyp: 0.12.0
     deprecated: 'One of your dependencies needs to upgrade to fsevents v2: 1) Proper nodejs v10+ support 2) No more fetching binaries from AWS, smaller package size'
     dev: true
     engines:
@@ -2245,6 +2301,20 @@ packages:
     dev: true
     resolution:
       integrity: sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc=
+  /gauge/2.7.4:
+    dependencies:
+      aproba: 1.2.0
+      console-control-strings: 1.1.0
+      has-unicode: 2.0.1
+      object-assign: 4.1.1
+      signal-exit: 3.0.2
+      string-width: 1.0.2
+      strip-ansi: 3.0.1
+      wide-align: 1.1.5
+    dev: true
+    optional: true
+    resolution:
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   /gensync/1.0.0-beta.1:
     dev: true
     engines:
@@ -2487,13 +2557,13 @@ packages:
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     resolution:
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-  /gulp-sourcemaps/2.6.5:
+  /gulp-sourcemaps/3.0.0:
     dependencies:
-      '@gulp-sourcemaps/identity-map': 1.0.2
+      '@gulp-sourcemaps/identity-map': 2.0.1
       '@gulp-sourcemaps/map-sources': 1.0.0
-      acorn: 5.7.3
+      acorn: 6.4.2
       convert-source-map: 1.7.0
-      css: 2.2.4
+      css: 3.0.0
       debug-fabulous: 1.1.0
       detect-newline: 2.1.0
       graceful-fs: 4.2.3
@@ -2502,9 +2572,9 @@ packages:
       through2: 2.0.5
     dev: true
     engines:
-      node: '>=4'
+      node: '>= 6'
     resolution:
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   /gulp-stylelint/13.0.0_stylelint@13.0.0:
     dependencies:
       chalk: 3.0.0
@@ -2576,7 +2646,7 @@ packages:
     engines:
       node: '>=4'
     resolution:
-      integrity: sha1-tdRU3CGZriJWmfNGfloH87lVuv0=
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   /has-flag/4.0.0:
     dev: true
     engines:
@@ -2589,6 +2659,11 @@ packages:
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     resolution:
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+  /has-unicode/2.0.1:
+    dev: true
+    optional: true
+    resolution:
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   /has-value/0.3.1:
     dependencies:
       get-value: 2.0.6
@@ -2693,6 +2768,13 @@ packages:
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+  /ignore-walk/3.0.4:
+    dependencies:
+      minimatch: 3.0.4
+    dev: true
+    optional: true
+    resolution:
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   /ignore/4.0.6:
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     engines:
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   /ini/1.3.5:
+    deprecated: Please update to ini >=1.3.6 to avoid a prototype pollution issue
     dev: true
     resolution:
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@@ -3059,7 +3142,7 @@ packages:
   /is-promise/2.1.0:
     dev: true
     resolution:
-      integrity: sha1-eaKp7OfwlugPNtKy87wWwf9L8/o=
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   /is-regexp/2.1.0:
     dev: true
     engines:
@@ -3119,7 +3202,7 @@ packages:
   /isarray/1.0.0:
     dev: true
     resolution:
-      integrity: sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=
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   /isarray/2.0.1:
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       es5-ext: 0.10.53
     dev: true
     resolution:
-      integrity: sha1-Jzi9nw089PhEkMVzbEhpmsYyzaM=
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   /make-iterator/1.0.1:
     dependencies:
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@@ -3557,7 +3640,27 @@ packages:
   /minimist/1.2.0:
     dev: true
     resolution:
-      integrity: sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=
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+  /minimist/1.2.8:
+    dev: true
+    optional: true
+    resolution:
+      integrity: sha512-2yyAR8qBkN3YuheJanUpWC5U3bb5osDywNB8RzDVlDwDHbocAJveqqj1u8+SVD7jkWT4yvsHCpWqqWqAxb0zCA==
+  /minipass/2.9.0:
+    dependencies:
+      safe-buffer: 5.2.1
+      yallist: 3.1.1
+    dev: true
+    optional: true
+    resolution:
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+  /minizlib/1.3.3:
+    dependencies:
+      minipass: 2.9.0
+    dev: true
+    optional: true
+    resolution:
+      integrity: sha512-6ZYMOEnmVsdCeTJVE0W9ZD+pVnE8h9Hma/iOwwRDsdQoePpoX56/8B6z3P9VNwppJuBKNRuFDRNRqRWexT9G9Q==
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