Based on an original idea from @janfri (see #50).

Problem this feature will solve

RiseTransitSet exposes arrays of data (#times, #azimuths), which are not very clear nor user-friendly.

Desired solution

A more Ruby approach would be to wrap such times and angles into dedicated objects, kind of a presenter of the data produced by the algorithm. This would also enable to have access to all the data, or only a few of them, without the need of memoization for performance.

Alternatives considered

• Transform RiseTransitSet to return an object with each data in its own method
• Possibly rename the class
• Extract twilight times from Sun into a dedicated object with each data in its own method