📝 Docs: Standardize slogan as something without "simple"

[JoshuaKGoldberg]

Documentation Request Checklist

• [X] I have read and agree to Mocha's Code of Conduct and Contributing Guidelines
• [X] I have searched for related issues and issues with the faq label, but none matched my issue.
• [X] I want to provide a PR to resolve this

Overview

Words like "easy" and "simple" are often used in writing to convey that something doesn't require extra complications or tooling. But they also mean in English that something should be literally "easy" or "simple" - which often isn't the case for devs new to a technology. It's good writing practice to use more precise adjectives instead.

Right now the Mocha slogan is "Simple, flexible, fun JavaScript test framework for Node.js & The Browser": https://github.com/mochajs/mocha/blob/645469e1920e2e86458ff068e74eef2e2915083e/README.md?plain=1#L5

Let's use a slogan that doesn't say "simple". Maybe just "flexible and fun" is enough?

Additional Info

https://justsimply.dev is a good resource that goes into more detail and has examples.

[JoshuaKGoldberg]

Food for thought, folks occasionally express a need for cross-JS-runtime tests. Example from https://twitter.com/_nicojs/status/1762508703863894472:

Nicholas C. Zakas @slicknet What I want: To write JavaScript tests once and be able to run them across Node.js, Bun, and Deno. Problem: Bun and Deno have built-in test runners you have to import from to run tests. I use Mocha. This doesn't work. Solution: ???

[voxpelli]

Maybe:

Classic reliable spec-style JavaScript test framework for Node.js & The Browser ☕️

Or more cheeky:

The classic spec-style JavaScript test framework for Node.js & The Browser ☕️

Simple, flexible, fun were all mantras in the beginning, now I think the focus should be more on being a reliable, trusted, no-thrills classic spec-style test runner – to maintain what works, not to push the boundaries.

[JoshuaKGoldberg]

I like the idea on focusing on reliable and trusted. Maybe both of those can become part of the mantra?

"spec-style" is -1 from me because many devs these don't know or care about assertion styles. This isn't a phrase many newer devs know of.

How about:

The classic reliable and trusted JavaScript test framework for Node.js & the Browser ☕

Or with commas:

The classic, reliable, and trusted JavaScript test framework for Node.js & the Browser ☕

[JoshuaKGoldberg]

Coming back to this, my vote is on:

The classic, reliable, trusted JavaScript test framework for Node.js & the Browser. ☕

cc @mochajs/maintenance-crew

Edit: oh, and once Bun & Deno are supported per #5108 down the road:

The classic, cross-runtime, reliable JavaScript test framework for browsers, Node.js, and more. ☕

[mark-wiemer]

Maybe instead of cross-runtime, you could use runtime-agnostic? Though I guess agnostic is more syllables!