Pin dependencies

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
babel-core (source)	devDependencies	pin	^6.26.3 -> 6.26.3
babel-loader	devDependencies	pin	^7.1.4 -> 7.1.4
babel-preset-latest (source)	devDependencies	pin	^6.24.1 -> 6.24.1
cross-env	devDependencies	pin	^5.1.5 -> 5.1.5
css-loader	devDependencies	pin	^0.28.11 -> 0.28.11
file-loader	devDependencies	pin	^1.1.11 -> 1.1.11
firebase (source, changelog)	dependencies	pin	^5.0.2 -> 5.0.2
lodash (source)	dependencies	pin	^4.17.10 -> 4.17.10
moment (source)	dependencies	pin	^2.22.1 -> 2.22.1
node-sass	devDependencies	pin	^4.9.0 -> 4.9.0
sass-loader	devDependencies	pin	^7.0.1 -> 7.0.1
screenfull	dependencies	pin	^3.3.2 -> 3.3.2
vue	dependencies	pin	^2.5.16 -> 2.5.16
vue-loader	devDependencies	pin	^15.0.10 -> 15.0.10
vue-template-compiler	devDependencies	pin	^2.5.16 -> 2.5.16
vuefire	dependencies	pin	^1.4.5 -> 1.4.5
webpack	devDependencies	pin	^4.8.1 -> 4.8.1
webpack-cli	devDependencies	pin	^2.1.3 -> 2.1.3
webpack-dev-server	devDependencies	pin	^3.1.4 -> 3.1.4

📌 Important: Renovate will wait until you have merged this Pin PR before creating any upgrade PRs for the affected packages. Add the preset :preserveSemverRanges your config if you instead don't wish to pin dependencies.

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