René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Including an \"En Dash\" in an axis title results in a 500 error on retrieving via getImage","articleBody":"### Bug Description\r\nAdding the [En Dash](http://www.codetable.net/decimal/8211) character (`–`, not a dash) to an axis title or a figure title will prevent the figure from being retrieved via `getImage`.\r\n\r\n### Repo Steps:\r\n1) Create a figure\r\n2) Add the En Dash character: `–` to the title and/or axis title\r\n3) Retrieve the figure via the Node.js SDK\r\n4) Observe the following error output:\r\n```\r\n{ Error: Bad response status code 500\r\n    at ClientRequest.handleResponse (/.../node_modules/plotly/index.js:237:25)\r\n    at Object.onceWrapper (events.js:324:30)\r\n    at emitOne (events.js:125:13)\r\n    at ClientRequest.emit (events.js:221:7)\r\n    at HTTPParser.parserOnIncomingClient [as onIncoming] (_http_client.js:550:21)\r\n    at HTTPParser.parserOnHeadersComplete (_http_common.js:117:23)\r\n    at TLSSocket.socketOnData (_http_client.js:439:20)\r\n    at emitOne (events.js:125:13)\r\n    at TLSSocket.emit (events.js:221:7)\r\n    at addChunk (_stream_readable.js:265:12) msg: undefined }\r\n```","author":{"url":"https://github.com/SpencerKaiser","@type":"Person","name":"SpencerKaiser"},"datePublished":"2018-04-02T22:03:51.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/56/plotly-nodejs/issues/56"}