Missing TypeScript typings for the published npm package

[whiite]

Hi, I noticed you've recently ported the JS version to TypeScript and can see you have a types file in the repo but it seems to be missing in the published package on npm for version 2 so the types can't currently be used without downloading the types file separately.

[cosinekitty]

@whiite Thank you for reporting this issue. We are grateful when people take the time to let us know something needs improvement.

@matheo Thank you for fixing the issue.

I committed one extra change in a8c970b to update the npm package version to 2.0.1 in documentation.json.

The npm package 2.0.1 now contains the file astronomy.d.ts.

[cosinekitty]

Thanks to help from @vpctorr in #329 and #330, the npm package of Astronomy Engine version 2.1.19 contains some more fixes for how TypeScript types are exported. I mention here in this issue in case anyone with a TypeScript project that depends on Astronomy Engine would like to help upgrade and re-test. Please report any problems here. Thanks in advance!