Use custom template by url

[KaiSchwarz-cnic]

Hey Pete,

I wrote some custom templates, that I want to reuse over several projects.
Therefore I added them to a public github repository.

Allowing to provide the template by url, would help a lot. e.g. https://raw.githubusercontent.com/...
Otherwise I would have to 1st save the template locally by using wget / curl or so, then generating the changelog and finally deleting the template again.

As the methods you use from fs package already support handling an URL, I expect just a minor modification in your code: trying to instantiate an URL Object from given template string.
https://nodejs.org/api/url.html#url_the_whatwg_url_api
So having a try catch around and if the above fails, just continue with the previous value.
I try to provide a PR.

Or do you have another approach?

[KaiSchwarz-cnic]

fyi - i just stumbled over that notice in the nodejs fs api
https://nodejs.org/api/fs.html#fs_fs_access_path_mode_callback

Using fs.access() to check for the accessibility of a file before calling fs.open(), fs.readFile() or fs.writeFile() is not recommended. Doing so introduces a race condition, since other processes may change the file's state between the two calls. Instead, user code should open/read/write the file directly and handle the error raised if the file is not accessible.

It might work for your case - no question, just wanted to forward this to you in addition.