Merge pull request #256 from DigitalSlideArchive/pin-tinycolor2

Pin tinycolor2

Author: manthey

histomicsui/web_client/package.json

@@ -36,7 +36,7 @@
         "copy-webpack-plugin": "^4.5.2",
         "petite-vue": "^0.4.1",
         "sinon": "^2.1.0",
-        "tinycolor2": "^1.4.1",
+        "tinycolor2": "~1.4.1",
         "url-search-params-polyfill": "^8.1.1",
         "vue": "~2.6.14",
         "vue-template-compiler": "~2.6.14",