sounding-analysis

Purpose

Provides analysis capabilities for the sounding-base crate.

Error handling strategy

Right now error handling is mixed up. Some functions/methods return Option while others return Result, and all missing values are indicated by Option::None. I need to clean this up so that funciton/methods return Results. Then when building a data structure up, if a function returns an error result, I will set the value to Option::None. If the user wants to know why it is Option::None, they will have to call the function/method and inspect the error.