Predict satellite visibility using Astro::Coord::ECI

Changes for 0.050_01 - 2023-08-25

• Add --almanac to pass(). This adds almanac data to appropriate passes. --ephemeris is more verbose, adding almanac data to all passes. This change involved refactoring event formatting to use sub-templates, rather than if-elsif-else chains.
• Add 'none' as valid argument to FormatTime->round_time(). It is equivalent to specifying undef, i.e. no rounding.