Include TypeScript type definitions in the exported files.
This might be a fix for #294, but I'm not sure.
The only real way to test is to publish on npm and see what happens!
Added Python support for user-defined stars.
Defined new StateVector methods: Position and Velocity.
Defined division operator: Vector / float.
Bumped version number to 2.1.12.
This is my second attempt to release eclipse obscuration.
I discovered there was a missing unit test for obscuration
for lunar eclipses in the Kotlin library. It has been added.
Added a new file generate/version.txt that contains
the current Astronomy Engine version number.
Now when I run the build/test process, the version
number is patched in all the places it needs to
be changed to keep all the packages and documentation
up to date.
This means when I want to change the Astronomy Engine
version number, I just need to edit version.txt, then
execute the generate/run script.
