Bump loader-utils, to-string-loader and webpack-cli#23

dependabot[bot] wants to merge 1 commit intomasterpurtuga/observables:masterfrom

dependabot/npm_and_yarn/loader-utils-and-to-string-loader-and-webpack-cli-1.4.2purtuga/observables:dependabot/npm_and_yarn/loader-utils-and-to-string-loader-and-webpack-cli-1.4.2Copy head branch name to clipboard