v1.0.0.0

The first release! Far from complete, but I consider it to be in a ready state for now. What started off as just a simple PR has now grown to so, so much more. As there are over 250 commits since I started this, a changelog for commits before this release will not be included, but a changelog will be present in the future. A full list of commits prior to this release can be seen here.

Thanks to:
@RCrockford (the original author behind Lunar Transfer Planner)
@Nazfib (author behind Transfer Window Planner, who graciously let me use their rendering code)
test_account (original account deleted) (contributor to LTP that added delta-V and phasing calculations)
@siimav (contributor to RP-1 that created its tooltips and graciously let me use them in TIP)
@ziggyzaddy (blackbird on discord, who has given me various useful advice throughout these months)

Some example images: