Replace 'request'

[acalcutt]

The request package used by tileserver-gl has been depreciated for quite a while and now has some vunerabilities. I think we should make some effort to replace it with something newer. I have looked a bit in the past and there are some options to replace it, but I have gotten stuck on understating the gzip features tileserver-gl uses.

If anyone has any ideas to replace it I would love to see a PR. I think it only gets used in https://github.com/maptiler/tileserver-gl/blob/master/src/serve_rendered.js

[mjj203]

I issued a pull request to your fork of tileserver-gl. Actually had to update main.js and serve_rendered.js with axios. acalcutt#284

[acalcutt]

Thanks, I looked at it and it looks good. Would you be able to make a PR on the maptiler/tileserver-gl master branch instead of my old fork? I have been putting in my effort here, so my fork is a bit out of date now.