Error when upgrading to v5.0.0

[sn3p]

After upgrading to v5.0.0 I'm getting an error (see below).
This happens because the publicPath fallback has been removed.

In my Webpack config I'm not setting the publicPath option. This option is now inherited by webfont-loader, which means undefined in my case and thus can't be resolved.

Created a PR to fix this #75

ERROR in ./assets/js/icons.font.js (./node_modules/css-loader/dist/cjs.js!./node_modules/webfonts-loader!./node_modules/babel-loader/lib!./assets/js/icons.font.js)
Module build failed (from ./node_modules/webfonts-loader/index.js):
TypeError [ERR_INVALID_ARG_TYPE]: The "url" argument must be of type string. Received type undefined
    at Url.parse (url.js:152:11)
    at urlParse (url.js:146:13)
    at Object.urlResolve [as resolve] (url.js:657:10)
    at webfontsGenerator (/root/defacto-elements/node_modules/webfonts-loader/index.js:223:28)
    at /root/defacto-elements/node_modules/@vusion/webfonts-generator/src/index.js:106:4
    at _fulfilled (/root/defacto-elements/node_modules/q/q.js:854:54)
    at /root/defacto-elements/node_modules/q/q.js:883:30
    at Promise.promise.promiseDispatch (/root/defacto-elements/node_modules/q/q.js:816:13)
    at /root/defacto-elements/node_modules/q/q.js:624:44
    at runSingle (/root/defacto-elements/node_modules/q/q.js:137:13)
    at flush (/root/defacto-elements/node_modules/q/q.js:125:13)
    at process._tickCallback (internal/process/next_tick.js:61:11)