Predict satellite visibility using Astro::Coord::ECI

Changes for 0.051 - 2023-09-11

• Without DateTime, ParseTime::ISO8601 now accepts any zone. These are handled by setting $ENV{TZ} before the conversion and hoping for the best. The documentation warns that this is a shaky way to handle zones.
• Make Warner->wail() stack dump if $Carp::Verbose true.
• 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.