Cleanup and update names

[ethanuppal]

This PR makes the following changes:

• Renames tru -> true and fals -> false.
• Replaces the older mod.rs structure with the newer idiomatic structure.
• Removes some redundant code.

Some questions: does #[inline] actually achieve anything (on the constructors for truth-y values)? Won't the compiler be smart enough to choose to inline (or not) when it deems necessary?

[ekiwi]

I like how you renamed the files (I did not know that you could do that this way). The small fixes are also great.

However, please remove the renaming of fals and tru. I do not want to change that.

[ethanuppal]

I'm curious why you prefer tru over true and fals over false?

[ekiwi]

I'm curious why you prefer tru over true and fals over false?

I don't see a reason to change it.

[ethanuppal]

I'm curious why you prefer tru over true and fals over false?

I don't see a reason to change it.

It follows established style guidelines, with examples including:

• Source: The Rust Style Guide

  When a name is forbidden because it is a reserved word (such as crate)...Don't misspell the word (krate).

• Source: Google style guidelines for C++

  Do not abbreviate by deleting letters within a word.

• Source: Microsoft style guidelines for VSCode

  Use whole words in names when possible.

[ekiwi]

It does not matter. I currently do not want to do the work involved in changing all uses of this API without added functionality.

[ethanuppal]

I deprecated the old names, so it should still work.

[ethanuppal]

@ekiwi

[ekiwi]

I like how you renamed the files (I did not know that you could do that this way). The small fixes are also great.

However, please remove the renaming of fals and tru. I do not want to change that.