History pack v1.0 + Astronomy pack v1.2

Changes:
Added the history pack (it's a separate .dll)

Astronomy pack:
Reworked how the following cards & artifacts behaved:
Stargaze (now has an on obtain effect instead of giving stars on certain triggers), Shooting star (now strikes and pushes enemy in a random direction instead of striking twice)
Changed some values surrounding star costs and gains:
-500 stars gained from photonic gift, -300 star cost of telescope, starry component is now unaffected by repeats

Also some general refactoring