`source` code instead of running it in functions

[IlanCosman]

Since we're creating a background shell each time, loading the functions into memory is just wasted time. Instead we should source files in the background process.

[SweepingBishops]

What does this actually do?

[IlanCosman]

@SweepingBishops When you have a function defined in your functions directory, that function is lazily loaded only when actually run the command. This means that the first run of a function has a slight overhead. Since we create a new Fish shell every time, we are always paying this cost and never getting the benefit of the function being loaded into memory.

[SweepingBishops]

Oh, Ok. But will this create problems if you have a lot of functions? Won't the shell take a longer time to load up?

[IlanCosman]

No. I'm referring to functions like tide items, which only ever run in the subshell. This would have no impact on shell startup time.