Added Support for number type in Attributes

[malav2110]

No description provided.

[ChristianMurphy]

Thanks @malav2110! 👍

[wooorm]

@malav2110 The tests are catching some potential issues: https://travis-ci.org/github/syntax-tree/xastscript/jobs/740919730#L293.

Travis has recently made it essentially impossible to use them for open source, which is why the build was so slow and I didn’t catch it before. I switched to use GH Actions. Rebasing should give you access and fast tests again, and locally you can check your types by running npm test.

[ChristianMurphy]

Thanks @malav2110!

[wooorm]

Thanks @malav2110, @ChristianMurphy!