…mand.

…end_tree` to `require_tree`.

…Introduces the idea of libraries. Full comments.

…. Add detailed comments.

…epend_tree.

+ Add more useful color generation.
+ Add @light and @dark constants to generate specific shades of colors.
+ Rename `msg._.` to `msg.util`. `util` is more readable and easier to type after a period.

+ Fix bug where a space was added after messages leading to unexpectedly erasing the first character if the last string passed to `msg` was a \r.

 + Removed unnecesary " . " for sourcing .load files.
 + Add comments to improve explaining the setup process.
 + Add more readable and user friendly if constructs as opposed to relying to any status code with `and` and `or`.
 + Remove `msg` plugin to split into another future PR.
 + Remove `rbenv` bug introduced in previous PR.

…and use only for root paths (fish_path and custom_path). Do not add custom paths for completions, only for plugins and themes.

…irectory or subdirectories instead of both.

…-fish to use import.

….fish

…er customizations.

…m paths and resort to a simpler solution while sourcing .load files.

…ix typos in comments.

… once and used declared variable consistently.