standard -F doesn't fix space-before-function-paren in class

[mblakele]

Test case:

const ServerBase = require('./server-base')

class ExternalServer extends ServerBase {

  getServerConfig() { return this.config.server.external }

  initRoutes() { require('./routes/external')(this.app) }

  getServerType() { return 'external' }
}

module.exports = ExternalServer

Running standard -F 5.4.1 I see three space-before-function-paren errors, but they aren't automatically fixed. Other minor problems like indent size and eol-last are fixed.

[bcomnes]

Moving to maxogden/standard-format#126